223252440 has 64 divisors (see below), whose sum is σ = 692863200. Its totient is φ = 57480192.

The previous prime is 223252439. The next prime is 223252441. The reversal of 223252440 is 44252322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (223252439) and next prime (223252441).

It is a super-3 number, since 3×223252440³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 223252440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223252441) 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, 28597 + ... + 35556.

Almost surely, 2^223252440 is an apocalyptic number.

223252440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223252440 is an abundant number, since it is smaller than the sum of its proper divisors (469610760).

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

223252440 is a wasteful number, since it uses less digits than its factorization.

223252440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64196 (or 64192 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 223252440 is about 14941.6344487476. The cubic root of 223252440 is about 606.6414365120.

The spelling of 223252440 in words is "two hundred twenty-three million, two hundred fifty-two thousand, four hundred forty".