Search a number
-
+
130994437 = 7312232707
BaseRepresentation
bin1111100111011…
…01000100000101
3100010111012120211
413303231010011
5232013310222
620555355421
73150301660
oct763550405
9303435524
10130994437
1167a41072
1237a52b71
13211a6302
141357c6d7
15b778277
hex7ced105

130994437 has 16 divisors (see below), whose sum is σ = 155287552. Its totient is φ = 108131760.

The previous prime is 130994431. The next prime is 130994449. The reversal of 130994437 is 734499031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 130994437 - 27 = 130994309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130994437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130994431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47038 + ... + 49744.

It is an arithmetic number, because the mean of its divisors is an integer number (9705472).

Almost surely, 2130994437 is an apocalyptic number.

It is an amenable number.

130994437 is a deficient number, since it is larger than the sum of its proper divisors (24293115).

130994437 is a wasteful number, since it uses less digits than its factorization.

130994437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 130994437 is about 11445.2801188962. The cubic root of 130994437 is about 507.8681186267.

The spelling of 130994437 in words is "one hundred thirty million, nine hundred ninety-four thousand, four hundred thirty-seven".

Divisors: 1 7 31 217 223 1561 2707 6913 18949 48391 83917 587419 603661 4225627 18713491 130994437