27457990 has 32 divisors (see below), whose sum is σ = 56770560. Its totient is φ = 9366624.

The previous prime is 27457979. The next prime is 27457999. The reversal of 27457990 is 9975472.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27457999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14731 + ... + 16489.

It is an arithmetic number, because the mean of its divisors is an integer number (1774080).

Almost surely, 2^27457990 is an apocalyptic number.

27457990 is an abundant number, since it is smaller than the sum of its proper divisors (29312570).

27457990 is a wasteful number, since it uses less digits than its factorization.

27457990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 27457990 is about 5240.0372136083. The cubic root of 27457990 is about 301.6867576470.

The spelling of 27457990 in words is "twenty-seven million, four hundred fifty-seven thousand, nine hundred ninety".