216400514 has 48 divisors (see below), whose sum is σ = 394377984. Its totient is φ = 88513920.

The previous prime is 216400477. The next prime is 216400529. The reversal of 216400514 is 415004612.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216400514.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93479 + ... + 95765.

It is an arithmetic number, because the mean of its divisors is an integer number (8216208).

Almost surely, 2^216400514 is an apocalyptic number.

216400514 is a deficient number, since it is larger than the sum of its proper divisors (177977470).

216400514 is a wasteful number, since it uses less digits than its factorization.

216400514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351 (or 2340 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 216400514 is about 14710.5579092025. The cubic root of 216400514 is about 600.3706173205.

The spelling of 216400514 in words is "two hundred sixteen million, four hundred thousand, five hundred fourteen".