213938630 has 16 divisors (see below), whose sum is σ = 386325504. Its totient is φ = 85300800.

The previous prime is 213938611. The next prime is 213938633. The reversal of 213938630 is 36839312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213938633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31046 + ... + 37305.

It is an arithmetic number, because the mean of its divisors is an integer number (24145344).

Almost surely, 2^213938630 is an apocalyptic number.

213938630 is a deficient number, since it is larger than the sum of its proper divisors (172386874).

213938630 is a wasteful number, since it uses less digits than its factorization.

213938630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68671.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 213938630 is about 14626.6411045052. The cubic root of 213938630 is about 598.0852199365.

The spelling of 213938630 in words is "two hundred thirteen million, nine hundred thirty-eight thousand, six hundred thirty".