28880408 has 8 divisors (see below), whose sum is σ = 54150780. Its totient is φ = 14440200.

The previous prime is 28880407. The next prime is 28880443. The reversal of 28880408 is 80408882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28880407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805018 + ... + 1805033.

Almost surely, 2^28880408 is an apocalyptic number.

It is an amenable number.

28880408 is a deficient number, since it is larger than the sum of its proper divisors (25270372).

28880408 is a wasteful number, since it uses less digits than its factorization.

28880408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610057 (or 3610053 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 28880408 is about 5374.0494973530. The cubic root of 28880408 is about 306.8087736680.

The spelling of 28880408 in words is "twenty-eight million, eight hundred eighty thousand, four hundred eight".