212687874 has 24 divisors (see below), whose sum is σ = 526656000. Its totient is φ = 60767928.

The previous prime is 212687857. The next prime is 212687899. The reversal of 212687874 is 478786212.

It is a super-2 number, since 2×212687874² = 90472263493279752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 843874 + ... + 844125.

It is an arithmetic number, because the mean of its divisors is an integer number (21944000).

Almost surely, 2^212687874 is an apocalyptic number.

212687874 is an abundant number, since it is smaller than the sum of its proper divisors (313968126).

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

212687874 is a wasteful number, since it uses less digits than its factorization.

212687874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688014 (or 1688011 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 212687874 is about 14583.8223384681. The cubic root of 212687874 is about 596.9174064842.

It can be divided in two parts, 2126 and 87874, that added together give a square (90000 = 300²).

The spelling of 212687874 in words is "two hundred twelve million, six hundred eighty-seven thousand, eight hundred seventy-four".