27974240 has 48 divisors (see below), whose sum is σ = 75533472. Its totient is φ = 9590784.

The previous prime is 27974239. The next prime is 27974249. The reversal of 27974240 is 4247972.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 27974240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27974249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11369 + ... + 13608.

It is an arithmetic number, because the mean of its divisors is an integer number (1573614).

Almost surely, 2^27974240 is an apocalyptic number.

27974240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27974240 is an abundant number, since it is smaller than the sum of its proper divisors (47559232).

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

27974240 is a wasteful number, since it uses less digits than its factorization.

27974240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24999 (or 24991 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 27974240 is about 5289.0679708243. The cubic root of 27974240 is about 303.5657465537.

The spelling of 27974240 in words is "twenty-seven million, nine hundred seventy-four thousand, two hundred forty".