28958404 has 12 divisors (see below), whose sum is σ = 50871744. Its totient is φ = 14423624.

The previous prime is 28958387. The next prime is 28958407. The reversal of 28958404 is 40485982.

It is a super-4 number, since 4×28958404⁴ (a number of 31 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (28958407) 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, 12712 + ... + 14815.

It is an arithmetic number, because the mean of its divisors is an integer number (4239312).

Almost surely, 2^28958404 is an apocalyptic number.

It is an amenable number.

28958404 is a deficient number, since it is larger than the sum of its proper divisors (21913340).

28958404 is a wasteful number, since it uses less digits than its factorization.

28958404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27794 (or 27792 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28958404 is about 5381.3013296042. The cubic root of 28958404 is about 307.0847202230.

The spelling of 28958404 in words is "twenty-eight million, nine hundred fifty-eight thousand, four hundred four".