216245452 has 12 divisors (see below), whose sum is σ = 387230536. Its totient is φ = 105608160.

The previous prime is 216245437. The next prime is 216245467. The reversal of 216245452 is 254542612.

216245452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216245437) and next prime (216245467).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628449 + ... + 628792.

Almost surely, 2^216245452 is an apocalyptic number.

It is an amenable number.

216245452 is a deficient number, since it is larger than the sum of its proper divisors (170985084).

216245452 is a wasteful number, since it uses less digits than its factorization.

216245452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257288 (or 1257286 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 216245452 is about 14705.2865324005. The cubic root of 216245452 is about 600.2271843383.

The spelling of 216245452 in words is "two hundred sixteen million, two hundred forty-five thousand, four hundred fifty-two".