27975000 has 96 divisors (see below), whose sum is σ = 87650640. Its totient is φ = 7440000.

The previous prime is 27974981. The next prime is 27975019. The reversal of 27975000 is 57972.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27974981) and next prime (27975019).

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 23 ways as a sum of consecutive naturals, for example, 74814 + ... + 75186.

Almost surely, 2^27975000 is an apocalyptic number.

27975000 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 27975000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43825320).

27975000 is an abundant number, since it is smaller than the sum of its proper divisors (59675640).

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

27975000 is an equidigital number, since it uses as much as digits as its factorization.

27975000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 27975000 is about 5289.1398166432. The cubic root of 27975000 is about 303.5684956052.

The spelling of 27975000 in words is "twenty-seven million, nine hundred seventy-five thousand".