28907600 has 30 divisors (see below), whose sum is σ = 69451470. Its totient is φ = 11562880.

The previous prime is 28907597. The next prime is 28907603. The reversal of 28907600 is 670982.

It is an interprime number because it is at equal distance from previous prime (28907597) and next prime (28907603).

It can be written as a sum of positive squares in 3 ways, for example, as 732736 + 28174864 = 856^2 + 5308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28907603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35735 + ... + 36534.

It is an arithmetic number, because the mean of its divisors is an integer number (2315049).

Almost surely, 2^28907600 is an apocalyptic number.

28907600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28907600 is an abundant number, since it is smaller than the sum of its proper divisors (40543870).

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

28907600 is a wasteful number, since it uses less digits than its factorization.

28907600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72287 (or 72276 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 28907600 is about 5376.5788378857. The cubic root of 28907600 is about 306.9050341641.

The spelling of 28907600 in words is "twenty-eight million, nine hundred seven thousand, six hundred".