213938970 has 64 divisors (see below), whose sum is σ = 587969280. Its totient is φ = 48803328.

The previous prime is 213938951. The next prime is 213938981. The reversal of 213938970 is 79839312.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199596 + ... + 200664.

It is an arithmetic number, because the mean of its divisors is an integer number (9187020).

Almost surely, 2^213938970 is an apocalyptic number.

213938970 is an abundant number, since it is smaller than the sum of its proper divisors (374030310).

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

213938970 is a wasteful number, since it uses less digits than its factorization.

213938970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 213938970 is about 14626.6527271280. The cubic root of 213938970 is about 598.0855367702.

The spelling of 213938970 in words is "two hundred thirteen million, nine hundred thirty-eight thousand, nine hundred seventy".