28755672 has 32 divisors (see below), whose sum is σ = 78425280. Its totient is φ = 8713760.

The previous prime is 28755667. The next prime is 28755677. The reversal of 28755672 is 27655782.

It is an interprime number because it is at equal distance from previous prime (28755667) and next prime (28755677).

It is a super-3 number, since 3×28755672³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54198 + ... + 54725.

It is an arithmetic number, because the mean of its divisors is an integer number (2450790).

Almost surely, 2^28755672 is an apocalyptic number.

28755672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28755672 is an abundant number, since it is smaller than the sum of its proper divisors (49669608).

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

28755672 is a wasteful number, since it uses less digits than its factorization.

28755672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108943 (or 108939 counting only the distinct ones).

The product of its digits is 235200, while the sum is 42.

The square root of 28755672 is about 5362.4315380245. The cubic root of 28755672 is about 306.3664284787.

The spelling of 28755672 in words is "twenty-eight million, seven hundred fifty-five thousand, six hundred seventy-two".