216201490 has 16 divisors (see below), whose sum is σ = 390121560. Its totient is φ = 86267520.

The previous prime is 216201451. The next prime is 216201493. The reversal of 216201490 is 94102612.

216201490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 212197489 + 4004001 = 14567^2 + 2001^2 .

It is not an unprimeable number, because it can be changed into a prime (216201493) 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, 22341 + ... + 30520.

Almost surely, 2^216201490 is an apocalyptic number.

216201490 is a deficient number, since it is larger than the sum of its proper divisors (173920070).

216201490 is a wasteful number, since it uses less digits than its factorization.

216201490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53277.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 216201490 is about 14703.7916878607. The cubic root of 216201490 is about 600.1865068341.

The spelling of 216201490 in words is "two hundred sixteen million, two hundred one thousand, four hundred ninety".