223513040 has 40 divisors (see below), whose sum is σ = 521869128. Its totient is φ = 89026560.

The previous prime is 223513021. The next prime is 223513051. The reversal of 223513040 is 40315322.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 100480576 + 123032464 = 10024^2 + 11092^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13484 + ... + 25076.

Almost surely, 2^223513040 is an apocalyptic number.

223513040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223513040 is an abundant number, since it is smaller than the sum of its proper divisors (298356088).

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

223513040 is a wasteful number, since it uses less digits than its factorization.

223513040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11847 (or 11841 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 223513040 is about 14950.3525042054. The cubic root of 223513040 is about 606.8773865807.

Adding to 223513040 its reverse (40315322), we get a palindrome (263828362).

The spelling of 223513040 in words is "two hundred twenty-three million, five hundred thirteen thousand, forty".