213801588 has 288 divisors, whose sum is σ = 770515200. Its totient is φ = 48107520.

The previous prime is 213801559. The next prime is 213801589. The reversal of 213801588 is 885108312.

It is a super-2 number, since 2×213801588² = 91422238062643488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213801589) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 612438 + ... + 612786.

It is an arithmetic number, because the mean of its divisors is an integer number (2675400).

Almost surely, 2^213801588 is an apocalyptic number.

213801588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213801588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385257600).

213801588 is an abundant number, since it is smaller than the sum of its proper divisors (556713612).

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

213801588 is a wasteful number, since it uses less digits than its factorization.

213801588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 213801588 is about 14621.9556831499. The cubic root of 213801588 is about 597.9574881320.

The spelling of 213801588 in words is "two hundred thirteen million, eight hundred one thousand, five hundred eighty-eight".