220469381 has 12 divisors (see below), whose sum is σ = 242834592. Its totient is φ = 200013000.

The previous prime is 220469377. The next prime is 220469383. The reversal of 220469381 is 183964022.

It is not a de Polignac number, because 220469381 - 2² = 220469377 is a prime.

It is a super-2 number, since 2×220469381² = 97213495917046322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220469383) 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, 67496 + ... + 70686.

It is an arithmetic number, because the mean of its divisors is an integer number (20236216).

Almost surely, 2^220469381 is an apocalyptic number.

It is an amenable number.

220469381 is a deficient number, since it is larger than the sum of its proper divisors (22365211).

220469381 is a wasteful number, since it uses less digits than its factorization.

220469381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784 (or 3773 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 220469381 is about 14848.2113737649. The cubic root of 220469381 is about 604.1100966286.

The spelling of 220469381 in words is "two hundred twenty million, four hundred sixty-nine thousand, three hundred eighty-one".