223857864 has 64 divisors (see below), whose sum is σ = 624456000. Its totient is φ = 74304000.

The previous prime is 223857857. The next prime is 223857869. The reversal of 223857864 is 468758322.

It is a super-2 number, since 2×223857864² = 100224686549284992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223857869) 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, 52152 + ... + 56280.

It is an arithmetic number, because the mean of its divisors is an integer number (9757125).

Almost surely, 2^223857864 is an apocalyptic number.

223857864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223857864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312228000).

223857864 is an abundant number, since it is smaller than the sum of its proper divisors (400598136).

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

223857864 is a wasteful number, since it uses less digits than its factorization.

223857864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4395 (or 4385 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 223857864 is about 14961.8803631094. The cubic root of 223857864 is about 607.1893122523.

The spelling of 223857864 in words is "two hundred twenty-three million, eight hundred fifty-seven thousand, eight hundred sixty-four".