27428700 has 108 divisors (see below), whose sum is σ = 86093448. Its totient is φ = 6739200.

The previous prime is 27428699. The next prime is 27428741. The reversal of 27428700 is 782472.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50430 + ... + 50970.

Almost surely, 2^27428700 is an apocalyptic number.

27428700 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 27428700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43046724).

27428700 is an abundant number, since it is smaller than the sum of its proper divisors (58664748).

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

27428700 is a wasteful number, since it uses less digits than its factorization.

27428700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 27428700 is about 5237.2416404058. The cubic root of 27428700 is about 301.5794476681.

The spelling of 27428700 in words is "twenty-seven million, four hundred twenty-eight thousand, seven hundred".