28542700 has 36 divisors (see below), whose sum is σ = 62739040. Its totient is φ = 11269440.

The previous prime is 28542697. The next prime is 28542713. The reversal of 28542700 is 724582.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6094 + ... + 9706.

Almost surely, 2^28542700 is an apocalyptic number.

28542700 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 28542700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31369520).

28542700 is an abundant number, since it is smaller than the sum of its proper divisors (34196340).

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

28542700 is a wasteful number, since it uses less digits than its factorization.

28542700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3706 (or 3699 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28542700 is about 5342.5368505982. The cubic root of 28542700 is about 305.6082103319.

The spelling of 28542700 in words is "twenty-eight million, five hundred forty-two thousand, seven hundred".