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130649028 = 22353205423
BaseRepresentation
bin1111100100110…
…00101111000100
3100002211122202220
413302120233010
5231421232103
620544132340
73144332646
oct762305704
9302748686
10130649028
1167825604
12379070b0
13210b5023
14134cc896
15b70ac53
hex7c98bc4

130649028 has 24 divisors (see below), whose sum is σ = 310601088. Its totient is φ = 42727776.

The previous prime is 130649023. The next prime is 130649053. The reversal of 130649028 is 820946031.

It is a self number, because there is not a number n which added to its sum of digits gives 130649028.

It is not an unprimeable number, because it can be changed into a prime (130649023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102076 + ... + 103347.

It is an arithmetic number, because the mean of its divisors is an integer number (12941712).

Almost surely, 2130649028 is an apocalyptic number.

It is an amenable number.

130649028 is an abundant number, since it is smaller than the sum of its proper divisors (179952060).

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

130649028 is a wasteful number, since it uses less digits than its factorization.

130649028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205483 (or 205481 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 130649028 is about 11430.1805760014. The cubic root of 130649028 is about 507.4213397787.

The spelling of 130649028 in words is "one hundred thirty million, six hundred forty-nine thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 53 106 159 212 318 636 205423 410846 616269 821692 1232538 2465076 10887419 21774838 32662257 43549676 65324514 130649028