223215740 has 24 divisors (see below), whose sum is σ = 511367472. Its totient is φ = 81169280.

The previous prime is 223215691. The next prime is 223215749. The reversal of 223215740 is 47512322.

223215740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223215740³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223215749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507089 + ... + 507528.

It is an arithmetic number, because the mean of its divisors is an integer number (21306978).

Almost surely, 2^223215740 is an apocalyptic number.

223215740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223215740 is an abundant number, since it is smaller than the sum of its proper divisors (288151732).

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

223215740 is a wasteful number, since it uses less digits than its factorization.

223215740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014637 (or 1014635 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 223215740 is about 14940.4062863096. The cubic root of 223215740 is about 606.6081931862.

The spelling of 223215740 in words is "two hundred twenty-three million, two hundred fifteen thousand, seven hundred forty".