28787150 has 48 divisors (see below), whose sum is σ = 61629984. Its totient is φ = 9799680.

The previous prime is 28787131. The next prime is 28787177. The reversal of 28787150 is 5178782.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81374 + ... + 81726.

It is an arithmetic number, because the mean of its divisors is an integer number (1283958).

Almost surely, 2^28787150 is an apocalyptic number.

28787150 is an abundant number, since it is smaller than the sum of its proper divisors (32842834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28787150 is a wasteful number, since it uses less digits than its factorization.

28787150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 28787150 is about 5365.3657843618. The cubic root of 28787150 is about 306.4781778598.

The spelling of 28787150 in words is "twenty-eight million, seven hundred eighty-seven thousand, one hundred fifty".