8723540 has 24 divisors (see below), whose sum is σ = 20936832. Its totient is φ = 2990880.

The previous prime is 8723531. The next prime is 8723551. The reversal of 8723540 is 453278.

It is a happy number.

It is a super-2 number, since 2×8723540² = 152200300263200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

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, 31016 + ... + 31295.

It is an arithmetic number, because the mean of its divisors is an integer number (872368).

Almost surely, 2^8723540 is an apocalyptic number.

It is an amenable number.

8723540 is an abundant number, since it is smaller than the sum of its proper divisors (12213292).

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

8723540 is a wasteful number, since it uses less digits than its factorization.

8723540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62327 (or 62325 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 8723540 is about 2953.5639488591. The cubic root of 8723540 is about 205.8563424844.

The spelling of 8723540 in words is "eight million, seven hundred twenty-three thousand, five hundred forty".