28553974 has 4 divisors (see below), whose sum is σ = 42830964. Its totient is φ = 14276986.

The previous prime is 28553963. The next prime is 28553977. The reversal of 28553974 is 47935582.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28553974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28553977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7138492 + ... + 7138495.

It is an arithmetic number, because the mean of its divisors is an integer number (10707741).

Almost surely, 2^28553974 is an apocalyptic number.

28553974 is a deficient number, since it is larger than the sum of its proper divisors (14276990).

28553974 is a wasteful number, since it uses less digits than its factorization.

28553974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14276989.

The product of its digits is 302400, while the sum is 43.

The square root of 28553974 is about 5343.5918631572. The cubic root of 28553974 is about 305.6484421417.

The spelling of 28553974 in words is "twenty-eight million, five hundred fifty-three thousand, nine hundred seventy-four".