27423990 has 48 divisors (see below), whose sum is σ = 77787216. Its totient is φ = 6648000.

The previous prime is 27423961. The next prime is 27423997. The reversal of 27423990 is 9932472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27423997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12861 + ... + 14840.

It is an arithmetic number, because the mean of its divisors is an integer number (1620567).

Almost surely, 2^27423990 is an apocalyptic number.

27423990 is an abundant number, since it is smaller than the sum of its proper divisors (50363226).

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

27423990 is a wasteful number, since it uses less digits than its factorization.

27423990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27725 (or 27722 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 27423990 is about 5236.7919569141. The cubic root of 27423990 is about 301.5621844789.

The spelling of 27423990 in words is "twenty-seven million, four hundred twenty-three thousand, nine hundred ninety".