2151260730 has 24 divisors (see below), whose sum is σ = 5593278132. Its totient is φ = 573669504.

The previous prime is 2151260729. The next prime is 2151260753. The reversal of 2151260730 is 370621512.

It is a happy number.

2151260730 is a `hidden beast` number, since 2 + 1 + 51 + 2 + 607 + 3 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1942429329 + 208831401 = 44073^2 + 14451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2151260694 and 2151260703.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11951359 + ... + 11951538.

Almost surely, 2^2151260730 is an apocalyptic number.

2151260730 is an abundant number, since it is smaller than the sum of its proper divisors (3442017402).

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

2151260730 is a wasteful number, since it uses less digits than its factorization.

2151260730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23902910 (or 23902907 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2151260730 is about 46381.6852863283. The cubic root of 2151260730 is about 1290.9151069478.

The spelling of 2151260730 in words is "two billion, one hundred fifty-one million, two hundred sixty thousand, seven hundred thirty".