212353440 has 96 divisors (see below), whose sum is σ = 720389376. Its totient is φ = 52270080.

The previous prime is 212353439. The next prime is 212353451. The reversal of 212353440 is 44353212.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 212353440.

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, 10776 + ... + 23255.

It is an arithmetic number, because the mean of its divisors is an integer number (7504056).

Almost surely, 2^212353440 is an apocalyptic number.

212353440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212353440 is an abundant number, since it is smaller than the sum of its proper divisors (508035936).

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

212353440 is a wasteful number, since it uses less digits than its factorization.

212353440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34062 (or 34054 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 212353440 is about 14572.3519035192. The cubic root of 212353440 is about 596.6043746891.

The spelling of 212353440 in words is "two hundred twelve million, three hundred fifty-three thousand, four hundred forty".