213532840 has 32 divisors (see below), whose sum is σ = 491626080. Its totient is φ = 83426112.

The previous prime is 213532817. The next prime is 213532861. The reversal of 213532840 is 48235312.

It is a junction number, because it is equal to n+sod(n) for n = 213532799 and 213532808.

It is an unprimeable number.

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, 60354 + ... + 63793.

It is an arithmetic number, because the mean of its divisors is an integer number (15363315).

Almost surely, 2^213532840 is an apocalyptic number.

213532840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213532840 is an abundant number, since it is smaller than the sum of its proper divisors (278093240).

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

213532840 is a wasteful number, since it uses less digits than its factorization.

213532840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124201 (or 124197 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 213532840 is about 14612.7629146579. The cubic root of 213532840 is about 597.7068394493.

The spelling of 213532840 in words is "two hundred thirteen million, five hundred thirty-two thousand, eight hundred forty".