27480990 has 16 divisors (see below), whose sum is σ = 65954448. Its totient is φ = 7328256.

The previous prime is 27480983. The next prime is 27480997. The reversal of 27480990 is 9908472.

It is an interprime number because it is at equal distance from previous prime (27480983) and next prime (27480997).

It is a super-2 number, since 2×27480990² = 1510409622760200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27480997) 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, 457987 + ... + 458046.

It is an arithmetic number, because the mean of its divisors is an integer number (4122153).

Almost surely, 2^27480990 is an apocalyptic number.

27480990 is an abundant number, since it is smaller than the sum of its proper divisors (38473458).

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

27480990 is a wasteful number, since it uses less digits than its factorization.

27480990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916043.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 27480990 is about 5242.2313951217. The cubic root of 27480990 is about 301.7709694304.

The spelling of 27480990 in words is "twenty-seven million, four hundred eighty thousand, nine hundred ninety".