213513750 has 60 divisors (see below), whose sum is σ = 578111820. Its totient is φ = 56934000.

The previous prime is 213513739. The next prime is 213513763. The reversal of 213513750 is 57315312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1761 + ... + 20739.

It is an arithmetic number, because the mean of its divisors is an integer number (9635197).

Almost surely, 2^213513750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213513750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289055910).

213513750 is an abundant number, since it is smaller than the sum of its proper divisors (364598070).

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

213513750 is a wasteful number, since it uses less digits than its factorization.

213513750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19007 (or 18989 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 213513750 is about 14612.1097039408. The cubic root of 213513750 is about 597.6890271015.

The spelling of 213513750 in words is "two hundred thirteen million, five hundred thirteen thousand, seven hundred fifty".