28977368 has 32 divisors (see below), whose sum is σ = 62272800. Its totient is φ = 12383232.

The previous prime is 28977359. The next prime is 28977373. The reversal of 28977368 is 86377982.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30728 + ... + 31656.

It is an arithmetic number, because the mean of its divisors is an integer number (1946025).

Almost surely, 2^28977368 is an apocalyptic number.

28977368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28977368 is an abundant number, since it is smaller than the sum of its proper divisors (33295432).

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

28977368 is a wasteful number, since it uses less digits than its factorization.

28977368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1495 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 28977368 is about 5383.0630685512. The cubic root of 28977368 is about 307.1517391544.

The spelling of 28977368 in words is "twenty-eight million, nine hundred seventy-seven thousand, three hundred sixty-eight".