27900420 has 24 divisors (see below), whose sum is σ = 78121344. Its totient is φ = 7440096.

The previous prime is 27900409. The next prime is 27900427. The reversal of 27900420 is 2400972.

It is not an unprimeable number, because it can be changed into a prime (27900427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232444 + ... + 232563.

It is an arithmetic number, because the mean of its divisors is an integer number (3255056).

Almost surely, 2^27900420 is an apocalyptic number.

27900420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27900420 is an abundant number, since it is smaller than the sum of its proper divisors (50220924).

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

27900420 is a wasteful number, since it uses less digits than its factorization.

27900420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465019 (or 465017 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 27900420 is about 5282.0848156765. The cubic root of 27900420 is about 303.2984892016.

The spelling of 27900420 in words is "twenty-seven million, nine hundred thousand, four hundred twenty".