210242690 has 32 divisors (see below), whose sum is σ = 433140480. Its totient is φ = 71976384.

The previous prime is 210242687. The next prime is 210242699. The reversal of 210242690 is 96242012.

It is a super-2 number, since 2×210242690² = 88403977396872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210242699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56219 + ... + 59841.

It is an arithmetic number, because the mean of its divisors is an integer number (13535640).

Almost surely, 2^210242690 is an apocalyptic number.

210242690 is an abundant number, since it is smaller than the sum of its proper divisors (222897790).

210242690 is a wasteful number, since it uses less digits than its factorization.

210242690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 210242690 is about 14499.7479288435. The cubic root of 210242690 is about 594.6210802097.

The spelling of 210242690 in words is "two hundred ten million, two hundred forty-two thousand, six hundred ninety".