213505748 has 6 divisors (see below), whose sum is σ = 373635066. Its totient is φ = 106752872.

The previous prime is 213505741. The next prime is 213505753. The reversal of 213505748 is 847505312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 160478224 + 53027524 = 12668^2 + 7282^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213505741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26688215 + ... + 26688222.

It is an arithmetic number, because the mean of its divisors is an integer number (62272511).

Almost surely, 2^213505748 is an apocalyptic number.

It is an amenable number.

213505748 is a deficient number, since it is larger than the sum of its proper divisors (160129318).

213505748 is a wasteful number, since it uses less digits than its factorization.

213505748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53376441 (or 53376439 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 213505748 is about 14611.8358873894. The cubic root of 213505748 is about 597.6815603422.

The spelling of 213505748 in words is "two hundred thirteen million, five hundred five thousand, seven hundred forty-eight".