28936842 has 32 divisors (see below), whose sum is σ = 63370944. Its totient is φ = 8736000.

The previous prime is 28936813. The next prime is 28936883. The reversal of 28936842 is 24863982.

It is a junction number, because it is equal to n+sod(n) for n = 28936794 and 28936803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21592 + ... + 22892.

It is an arithmetic number, because the mean of its divisors is an integer number (1980342).

Almost surely, 2^28936842 is an apocalyptic number.

28936842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28936842 is an abundant number, since it is smaller than the sum of its proper divisors (34434102).

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

28936842 is a wasteful number, since it uses less digits than its factorization.

28936842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654.

The product of its digits is 165888, while the sum is 42.

The square root of 28936842 is about 5379.2975377832. The cubic root of 28936842 is about 307.0084843825.

The spelling of 28936842 in words is "twenty-eight million, nine hundred thirty-six thousand, eight hundred forty-two".