28622300 has 72 divisors (see below), whose sum is σ = 73328640. Its totient is φ = 9489600.

The previous prime is 28622287. The next prime is 28622323. The reversal of 28622300 is 322682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21041 + ... + 22359.

Almost surely, 2^28622300 is an apocalyptic number.

28622300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28622300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36664320).

28622300 is an abundant number, since it is smaller than the sum of its proper divisors (44706340).

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

28622300 is a wasteful number, since it uses less digits than its factorization.

28622300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 28622300 is about 5349.9813083786. The cubic root of 28622300 is about 305.8920404607.

Adding to 28622300 its reverse (322682), we get a palindrome (28944982).

The spelling of 28622300 in words is "twenty-eight million, six hundred twenty-two thousand, three hundred".