213357690 has 192 divisors, whose sum is σ = 691891200. Its totient is φ = 44416512.

The previous prime is 213357689. The next prime is 213357731. The reversal of 213357690 is 96753312.

213357690 is a `hidden beast` number, since 213 + 357 + 6 + 90 = 666.

213357690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213357690² = 91043007764272200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 892591 + ... + 892829.

It is an arithmetic number, because the mean of its divisors is an integer number (3603600).

Almost surely, 2^213357690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213357690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345945600).

213357690 is an abundant number, since it is smaller than the sum of its proper divisors (478533510).

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

213357690 is a wasteful number, since it uses less digits than its factorization.

213357690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 213357690 is about 14606.7686364918. The cubic root of 213357690 is about 597.5433720259.

The spelling of 213357690 in words is "two hundred thirteen million, three hundred fifty-seven thousand, six hundred ninety".