220934457 has 12 divisors (see below), whose sum is σ = 319285824. Its totient is φ = 147216600.

The previous prime is 220934453. The next prime is 220934471. The reversal of 220934457 is 754439022.

220934457 is a `hidden beast` number, since 2 + 209 + 3 + 445 + 7 = 666.

220934457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220934457 - 2² = 220934453 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (220934453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18148 + ... + 27770.

It is an arithmetic number, because the mean of its divisors is an integer number (26607152).

Almost surely, 2^220934457 is an apocalyptic number.

It is an amenable number.

220934457 is a deficient number, since it is larger than the sum of its proper divisors (98351367).

220934457 is a wasteful number, since it uses less digits than its factorization.

220934457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12180 (or 12177 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 220934457 is about 14863.8641342014. The cubic root of 220934457 is about 604.5345845693.

The spelling of 220934457 in words is "two hundred twenty million, nine hundred thirty-four thousand, four hundred fifty-seven".