216354630 has 32 divisors (see below), whose sum is σ = 530302464. Its totient is φ = 56466656.

The previous prime is 216354623. The next prime is 216354643. The reversal of 216354630 is 36453612.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75312 + ... + 78131.

It is an arithmetic number, because the mean of its divisors is an integer number (16571952).

Almost surely, 2^216354630 is an apocalyptic number.

216354630 is an abundant number, since it is smaller than the sum of its proper divisors (313947834).

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

216354630 is a wasteful number, since it uses less digits than its factorization.

216354630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153500.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 216354630 is about 14708.9982663674. The cubic root of 216354630 is about 600.3281815731.

The spelling of 216354630 in words is "two hundred sixteen million, three hundred fifty-four thousand, six hundred thirty".