28977408 has 54 divisors (see below), whose sum is σ = 83555654. Its totient is φ = 9658368.

The previous prime is 28977391. The next prime is 28977439. The reversal of 28977408 is 80477982.

It can be written as a sum of positive squares in only one way, i.e., 28387584 + 589824 = 5328^2 + 768^2 .

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3985 + ... + 8592.

Almost surely, 2^28977408 is an apocalyptic number.

It is an amenable number.

28977408 is an abundant number, since it is smaller than the sum of its proper divisors (54578246).

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

28977408 is a wasteful number, since it uses less digits than its factorization.

28977408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12599 (or 12582 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 28977408 is about 5383.0667839067. The cubic root of 28977408 is about 307.1518804838.

The spelling of 28977408 in words is "twenty-eight million, nine hundred seventy-seven thousand, four hundred eight".