216271874 has 16 divisors (see below), whose sum is σ = 399271488. Its totient is φ = 85558032.

The previous prime is 216271871. The next prime is 216271877. The reversal of 216271874 is 478172612.

It is an interprime number because it is at equal distance from previous prime (216271871) and next prime (216271877).

It is not an unprimeable number, because it can be changed into a prime (216271871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593972 + ... + 594335.

It is an arithmetic number, because the mean of its divisors is an integer number (24954468).

Almost surely, 2^216271874 is an apocalyptic number.

216271874 is a deficient number, since it is larger than the sum of its proper divisors (182999614).

216271874 is a wasteful number, since it uses less digits than its factorization.

216271874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188329.

The product of its digits is 37632, while the sum is 38.

The square root of 216271874 is about 14706.1848893586. The cubic root of 216271874 is about 600.2516296413.

The spelling of 216271874 in words is "two hundred sixteen million, two hundred seventy-one thousand, eight hundred seventy-four".