15940434 has 16 divisors (see below), whose sum is σ = 32240160. Its totient is φ = 5253600.

The previous prime is 15940429. The next prime is 15940453. The reversal of 15940434 is 43404951.

It is a super-2 number, since 2×15940434² = 508194872216712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14392 + ... + 15459.

It is an arithmetic number, because the mean of its divisors is an integer number (2015010).

Almost surely, 2^15940434 is an apocalyptic number.

15940434 is an abundant number, since it is smaller than the sum of its proper divisors (16299726).

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

15940434 is a wasteful number, since it uses less digits than its factorization.

15940434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29945.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 15940434 is about 3992.5473071712. The cubic root of 15940434 is about 251.6711192191.

The spelling of 15940434 in words is "fifteen million, nine hundred forty thousand, four hundred thirty-four".