27223740 has 36 divisors (see below), whose sum is σ = 82579224. Its totient is φ = 7259616.

The previous prime is 27223739. The next prime is 27223741. The reversal of 27223740 is 4732272.

It is an interprime number because it is at equal distance from previous prime (27223739) and next prime (27223741).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×27223740² = 1482264039175200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27223741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75442 + ... + 75801.

Almost surely, 2^27223740 is an apocalyptic number.

27223740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27223740 is an abundant number, since it is smaller than the sum of its proper divisors (55355484).

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

27223740 is a wasteful number, since it uses less digits than its factorization.

27223740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151258 (or 151253 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 27223740 is about 5217.6373963701. The cubic root of 27223740 is about 300.8263881850.

The spelling of 27223740 in words is "twenty-seven million, two hundred twenty-three thousand, seven hundred forty".