212097144 has 32 divisors (see below), whose sum is σ = 605992320. Its totient is φ = 60599136.

The previous prime is 212097101. The next prime is 212097169. The reversal of 212097144 is 441790212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631074 + ... + 631409.

It is an arithmetic number, because the mean of its divisors is an integer number (18937260).

Almost surely, 2^212097144 is an apocalyptic number.

212097144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212097144 is an abundant number, since it is smaller than the sum of its proper divisors (393895176).

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

212097144 is a wasteful number, since it uses less digits than its factorization.

212097144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262499 (or 1262495 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 212097144 is about 14563.5553351508. Note that the first 3 decimals coincide. The cubic root of 212097144 is about 596.3642579097.

The spelling of 212097144 in words is "two hundred twelve million, ninety-seven thousand, one hundred forty-four".