212273457 has 16 divisors (see below), whose sum is σ = 313113600. Its totient is φ = 126837200.

The previous prime is 212273447. The next prime is 212273459. The reversal of 212273457 is 754372212.

It is a cyclic number.

It is not a de Polignac number, because 212273457 - 2⁶ = 212273393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (212273459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42957 + ... + 47642.

It is an arithmetic number, because the mean of its divisors is an integer number (19569600).

Almost surely, 2^212273457 is an apocalyptic number.

It is an amenable number.

212273457 is a deficient number, since it is larger than the sum of its proper divisors (100840143).

212273457 is a wasteful number, since it uses less digits than its factorization.

212273457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90684.

The product of its digits is 23520, while the sum is 33.

The square root of 212273457 is about 14569.6073042481. The cubic root of 212273457 is about 596.5294615318.

The spelling of 212273457 in words is "two hundred twelve million, two hundred seventy-three thousand, four hundred fifty-seven".