2391256434 has 16 divisors (see below), whose sum is σ = 5465729088. Its totient is φ = 683216112.

The previous prime is 2391256411. The next prime is 2391256447. The reversal of 2391256434 is 4346521932.

It is a junction number, because it is equal to n+sod(n) for n = 2391256392 and 2391256401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28467297 + ... + 28467380.

It is an arithmetic number, because the mean of its divisors is an integer number (341608068).

Almost surely, 2^2391256434 is an apocalyptic number.

2391256434 is an abundant number, since it is smaller than the sum of its proper divisors (3074472654).

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

2391256434 is a wasteful number, since it uses less digits than its factorization.

2391256434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56934689.

The product of its digits is 155520, while the sum is 39.

The square root of 2391256434 is about 48900.4747829712. The cubic root of 2391256434 is about 1337.2380241437.

The spelling of 2391256434 in words is "two billion, three hundred ninety-one million, two hundred fifty-six thousand, four hundred thirty-four".