28490600 has 24 divisors (see below), whose sum is σ = 66241110. Its totient is φ = 11396160.

The previous prime is 28490593. The next prime is 28490603. The reversal of 28490600 is 609482.

It can be written as a sum of positive squares in 3 ways, for example, as 27478564 + 1012036 = 5242^2 + 1006^2 .

It is not an unprimeable number, because it can be changed into a prime (28490603) 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, 71027 + ... + 71426.

Almost surely, 2^28490600 is an apocalyptic number.

28490600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28490600 is an abundant number, since it is smaller than the sum of its proper divisors (37750510).

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

28490600 is a wasteful number, since it uses less digits than its factorization.

28490600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142469 (or 142460 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 28490600 is about 5337.6586627472. The cubic root of 28490600 is about 305.4221512535.

The spelling of 28490600 in words is "twenty-eight million, four hundred ninety thousand, six hundred".