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130142464 = 28232312
BaseRepresentation
bin1111100000111…
…01000100000000
3100001212220220021
413300131010000
5231304024324
620525223224
73140123044
oct760350400
9301786807
10130142464
1167509a61
1237701b14
1320c6859a
14133da024
15b65aae4
hex7c1d100

130142464 has 81 divisors (see below), whose sum is σ = 280604919. Its totient is φ = 60234240.

The previous prime is 130142461. The next prime is 130142473. The reversal of 130142464 is 464241031.

The square root of 130142464 is 11408.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130142461) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4198129 + ... + 4198159.

Almost surely, 2130142464 is an apocalyptic number.

130142464 is the 11408-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130142464

130142464 is an abundant number, since it is smaller than the sum of its proper divisors (150462455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130142464 is an frugal number, since it uses more digits than its factorization.

130142464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The cubic root of 130142464 is about 506.7646840223.

Multiplying 130142464 by its sum of digits (25), we get a square (3253561600 = 570402).

Multiplying 130142464 by its product of nonzero digits (2304), we get a square (299848237056 = 5475842).

Adding to 130142464 its reverse (464241031), we get a palindrome (594383495).

The spelling of 130142464 in words is "one hundred thirty million, one hundred forty-two thousand, four hundred sixty-four".

Divisors: 1 2 4 8 16 23 31 32 46 62 64 92 124 128 184 248 256 368 496 529 713 736 961 992 1058 1426 1472 1922 1984 2116 2852 2944 3844 3968 4232 5704 5888 7688 7936 8464 11408 15376 16399 16928 22103 22816 30752 32798 33856 44206 45632 61504 65596 67712 88412 91264 123008 131192 135424 176824 182528 246016 262384 353648 508369 524768 707296 1016738 1049536 1414592 2033476 2099072 2829184 4066952 4198144 5658368 8133904 16267808 32535616 65071232 130142464