212928984 has 48 divisors (see below), whose sum is σ = 587574000. Its totient is φ = 69635904.

The previous prime is 212928977. The next prime is 212928997. The reversal of 212928984 is 489829212.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 24084 + ... + 31715.

It is an arithmetic number, because the mean of its divisors is an integer number (12241125).

Almost surely, 2^212928984 is an apocalyptic number.

212928984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212928984 is an abundant number, since it is smaller than the sum of its proper divisors (374645016).

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

212928984 is a wasteful number, since it uses less digits than its factorization.

212928984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55864 (or 55857 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 212928984 is about 14592.0863484287. The cubic root of 212928984 is about 597.1428830667.

It can be divided in two parts, 21292 and 8984, that added together give a square (30276 = 174²).

The spelling of 212928984 in words is "two hundred twelve million, nine hundred twenty-eight thousand, nine hundred eighty-four".