216351044 has 48 divisors (see below), whose sum is σ = 493411968. Its totient is φ = 80552448.

The previous prime is 216351029. The next prime is 216351067. The reversal of 216351044 is 440153612.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11294 + ... + 23669.

It is an arithmetic number, because the mean of its divisors is an integer number (10279416).

Almost surely, 2^216351044 is an apocalyptic number.

It is an amenable number.

216351044 is an abundant number, since it is smaller than the sum of its proper divisors (277060924).

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

216351044 is a wasteful number, since it uses less digits than its factorization.

216351044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35004 (or 35002 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 216351044 is about 14708.8763676904. The cubic root of 216351044 is about 600.3248648137.

The spelling of 216351044 in words is "two hundred sixteen million, three hundred fifty-one thousand, forty-four".