213527740 has 24 divisors (see below), whose sum is σ = 460528992. Its totient is φ = 83102400.

The previous prime is 213527737. The next prime is 213527779. The reversal of 213527740 is 47725312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143536 + ... + 145015.

It is an arithmetic number, because the mean of its divisors is an integer number (19188708).

Almost surely, 2^213527740 is an apocalyptic number.

213527740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213527740 is an abundant number, since it is smaller than the sum of its proper divisors (247001252).

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

213527740 is a wasteful number, since it uses less digits than its factorization.

213527740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288597 (or 288595 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 213527740 is about 14612.5884086290. The cubic root of 213527740 is about 597.7020808851.

It can be divided in two parts, 21352 and 7740, that added together give a palindrome (29092).

The spelling of 213527740 in words is "two hundred thirteen million, five hundred twenty-seven thousand, seven hundred forty".