918904428 has 36 divisors (see below), whose sum is σ = 2501463328. Its totient is φ = 282739680.

The previous prime is 918904421. The next prime is 918904433. The reversal of 918904428 is 824409819.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (918904421) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 981268 + ... + 982203.

Almost surely, 2^918904428 is an apocalyptic number.

It is an amenable number.

918904428 is an abundant number, since it is smaller than the sum of its proper divisors (1582558900).

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

918904428 is a wasteful number, since it uses less digits than its factorization.

918904428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963494 (or 1963489 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 918904428 is about 30313.4364267729. The cubic root of 918904428 is about 972.2026072594.

The spelling of 918904428 in words is "nine hundred eighteen million, nine hundred four thousand, four hundred twenty-eight".