28374975 has 48 divisors (see below), whose sum is σ = 52695040. Its totient is φ = 14968800.

The previous prime is 28374971. The next prime is 28374977. The reversal of 28374975 is 57947382.

It is not a de Polignac number, because 28374975 - 2² = 28374971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28374975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28374971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85560 + ... + 85890.

Almost surely, 2^28374975 is an apocalyptic number.

28374975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28374975 is a deficient number, since it is larger than the sum of its proper divisors (24320065).

28374975 is a wasteful number, since it uses less digits than its factorization.

28374975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 466 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 28374975 is about 5326.8165915488. The cubic root of 28374975 is about 305.0084204430.

The spelling of 28374975 in words is "twenty-eight million, three hundred seventy-four thousand, nine hundred seventy-five".