28485100 has 36 divisors (see below), whose sum is σ = 70644784. Its totient is φ = 9766080.

The previous prime is 28485089. The next prime is 28485101. The reversal of 28485100 is 158482.

It is a super-2 number, since 2×28485100² = 1622801844020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485101) 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, 19647 + ... + 21046.

Almost surely, 2^28485100 is an apocalyptic number.

28485100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28485100 is an abundant number, since it is smaller than the sum of its proper divisors (42159684).

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

28485100 is a wasteful number, since it uses less digits than its factorization.

28485100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40714 (or 40707 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 28485100 is about 5337.1434307127. The cubic root of 28485100 is about 305.4024964675.

The spelling of 28485100 in words is "twenty-eight million, four hundred eighty-five thousand, one hundred".