28603172 has 12 divisors (see below), whose sum is σ = 53906076. Its totient is φ = 13201440.

The previous prime is 28603153. The next prime is 28603217. The reversal of 28603172 is 27130682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14868736 + 13734436 = 3856^2 + 3706^2 .

It is a super-3 number, since 3×28603172³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274979 + ... + 275082.

It is an arithmetic number, because the mean of its divisors is an integer number (4492173).

Almost surely, 2^28603172 is an apocalyptic number.

It is an amenable number.

28603172 is a deficient number, since it is larger than the sum of its proper divisors (25302904).

28603172 is a wasteful number, since it uses less digits than its factorization.

28603172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550078 (or 550076 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 28603172 is about 5348.1933398111. The cubic root of 28603172 is about 305.8238837339.

The spelling of 28603172 in words is "twenty-eight million, six hundred three thousand, one hundred seventy-two".