28861700 has 36 divisors (see below), whose sum is σ = 71578752. Its totient is φ = 9895200.

The previous prime is 28861697. The next prime is 28861709. The reversal of 28861700 is 716882.

It is a super-3 number, since 3×28861700³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28861709) 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, 19916 + ... + 21315.

Almost surely, 2^28861700 is an apocalyptic number.

28861700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28861700 is an abundant number, since it is smaller than the sum of its proper divisors (42717052).

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

28861700 is a wasteful number, since it uses less digits than its factorization.

28861700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41252 (or 41245 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28861700 is about 5372.3086285134. The cubic root of 28861700 is about 306.7425116962.

The spelling of 28861700 in words is "twenty-eight million, eight hundred sixty-one thousand, seven hundred".