28603725 has 12 divisors (see below), whose sum is σ = 47291616. Its totient is φ = 15255280.

The previous prime is 28603717. The next prime is 28603727. The reversal of 28603725 is 52730682.

It is not a de Polignac number, because 28603725 - 2³ = 28603717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28603727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190617 + ... + 190766.

It is an arithmetic number, because the mean of its divisors is an integer number (3940968).

Almost surely, 2^28603725 is an apocalyptic number.

28603725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28603725 is a deficient number, since it is larger than the sum of its proper divisors (18687891).

28603725 is a wasteful number, since it uses less digits than its factorization.

28603725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381396 (or 381391 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28603725 is about 5348.2450392629. The cubic root of 28603725 is about 305.8258546052.

The spelling of 28603725 in words is "twenty-eight million, six hundred three thousand, seven hundred twenty-five".