28007252 has 24 divisors (see below), whose sum is σ = 60324096. Its totient is φ = 11079648.

The previous prime is 28007227. The next prime is 28007269. The reversal of 28007252 is 25270082.

It is a super-4 number, since 4×28007252⁴ (a number of 31 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

28007252 is a modest number, since divided by 7252 gives 28 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38108 + ... + 38835.

It is an arithmetic number, because the mean of its divisors is an integer number (2513504).

Almost surely, 2^28007252 is an apocalyptic number.

It is an amenable number.

28007252 is an abundant number, since it is smaller than the sum of its proper divisors (32316844).

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

28007252 is a wasteful number, since it uses less digits than its factorization.

28007252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76967 (or 76965 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 28007252 is about 5292.1878273546. The cubic root of 28007252 is about 303.6851108094.

The spelling of 28007252 in words is "twenty-eight million, seven thousand, two hundred fifty-two".