212074660 has 48 divisors (see below), whose sum is σ = 538925184. Its totient is φ = 68433408.

The previous prime is 212074607. The next prime is 212074691. The reversal of 212074660 is 66470212.

It is a super-2 number, since 2×212074660² = 89951322828231200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42174 + ... + 46933.

It is an arithmetic number, because the mean of its divisors is an integer number (11227608).

Almost surely, 2^212074660 is an apocalyptic number.

212074660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212074660 is an abundant number, since it is smaller than the sum of its proper divisors (326850524).

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

212074660 is a wasteful number, since it uses less digits than its factorization.

212074660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89140 (or 89138 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 212074660 is about 14562.7833878006. The cubic root of 212074660 is about 596.3431840320.

The spelling of 212074660 in words is "two hundred twelve million, seventy-four thousand, six hundred sixty".