223632040 has 32 divisors (see below), whose sum is σ = 515448360. Its totient is φ = 87270400.

The previous prime is 223632023. The next prime is 223632043. The reversal of 223632040 is 40236322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 171243396 + 52388644 = 13086^2 + 7238^2 .

It is a super-2 number, since 2×223632040² = 100022578629123200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (223632043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66541 + ... + 69820.

Almost surely, 2^223632040 is an apocalyptic number.

223632040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223632040 is an abundant number, since it is smaller than the sum of its proper divisors (291816320).

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

223632040 is a wasteful number, since it uses less digits than its factorization.

223632040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136413 (or 136409 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 223632040 is about 14954.3318138926. The cubic root of 223632040 is about 606.9850694796.

Adding to 223632040 its reverse (40236322), we get a palindrome (263868362).

The spelling of 223632040 in words is "two hundred twenty-three million, six hundred thirty-two thousand, forty".