212553340 has 24 divisors (see below), whose sum is σ = 446663952. Its totient is φ = 84963840.

The previous prime is 212553337. The next prime is 212553359. The reversal of 212553340 is 43355212.

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, 39067 + ... + 44173.

It is an arithmetic number, because the mean of its divisors is an integer number (18610998).

Almost surely, 2^212553340 is an apocalyptic number.

212553340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212553340 is an abundant number, since it is smaller than the sum of its proper divisors (234110612).

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

212553340 is a wasteful number, since it uses less digits than its factorization.

212553340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197 (or 7195 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 212553340 is about 14579.2091692245. The cubic root of 212553340 is about 596.7915215070.

The spelling of 212553340 in words is "two hundred twelve million, five hundred fifty-three thousand, three hundred forty".