916040128 has 28 divisors (see below), whose sum is σ = 1852071480. Its totient is φ = 449376512.

The previous prime is 916040107. The next prime is 916040129. The reversal of 916040128 is 821040619.

It is a happy number.

It is a super-2 number, since 2×916040128² = 1678259032212512768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 916040128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916040129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131638 + ... + 138421.

It is an arithmetic number, because the mean of its divisors is an integer number (66145410).

Almost surely, 2^916040128 is an apocalyptic number.

It is an amenable number.

916040128 is an abundant number, since it is smaller than the sum of its proper divisors (936031352).

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

916040128 is a wasteful number, since it uses less digits than its factorization.

916040128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270124 (or 270114 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 916040128 is about 30266.1548268028. The cubic root of 916040128 is about 971.1914109470.

The spelling of 916040128 in words is "nine hundred sixteen million, forty thousand, one hundred twenty-eight".