216247074 has 16 divisors (see below), whose sum is σ = 439584960. Its totient is φ = 70900560.

The previous prime is 216247069. The next prime is 216247111. The reversal of 216247074 is 470742612.

216247074 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216247074² = 93525594027122952, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295054 + ... + 295785.

It is an arithmetic number, because the mean of its divisors is an integer number (27474060).

Almost surely, 2^216247074 is an apocalyptic number.

216247074 is an abundant number, since it is smaller than the sum of its proper divisors (223337886).

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

216247074 is a wasteful number, since it uses less digits than its factorization.

216247074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590905.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 216247074 is about 14705.3416825316. The cubic root of 216247074 is about 600.2286850497.

Adding to 216247074 its reverse (470742612), we get a palindrome (686989686).

The spelling of 216247074 in words is "two hundred sixteen million, two hundred forty-seven thousand, seventy-four".