210193930 has 8 divisors (see below), whose sum is σ = 378349092. Its totient is φ = 84077568.

The previous prime is 210193927. The next prime is 210193961. The reversal of 210193930 is 39391012.

It can be written as a sum of positive squares in 2 ways, for example, as 192071881 + 18122049 = 13859^2 + 4257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10509687 + ... + 10509706.

Almost surely, 2^210193930 is an apocalyptic number.

210193930 is a deficient number, since it is larger than the sum of its proper divisors (168155162).

210193930 is a wasteful number, since it uses less digits than its factorization.

210193930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21019400.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 210193930 is about 14498.0664228027. The cubic root of 210193930 is about 594.5751079961.

The spelling of 210193930 in words is "two hundred ten million, one hundred ninety-three thousand, nine hundred thirty".