212113944 has 160 divisors (see below), whose sum is σ = 689046000. Its totient is φ = 60455808.

The previous prime is 212113939. The next prime is 212113963. The reversal of 212113944 is 449311212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 518412 + ... + 518820.

Almost surely, 2^212113944 is an apocalyptic number.

212113944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212113944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344523000).

212113944 is an abundant number, since it is smaller than the sum of its proper divisors (476932056).

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

212113944 is an equidigital number, since it uses as much as digits as its factorization.

212113944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 421 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 212113944 is about 14564.1321059650. The cubic root of 212113944 is about 596.3800032970.

The spelling of 212113944 in words is "two hundred twelve million, one hundred thirteen thousand, nine hundred forty-four".