23276840 has 16 divisors (see below), whose sum is σ = 52372980. Its totient is φ = 9310720.

The previous prime is 23276833. The next prime is 23276873. The reversal of 23276840 is 4867232.

It can be written as a sum of positive squares in 2 ways, for example, as 23020804 + 256036 = 4798^2 + 506^2 .

It is a super-2 number, since 2×23276840² = 1083622560771200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23276797 and 23276806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290921 + ... + 291000.

Almost surely, 2^23276840 is an apocalyptic number.

23276840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23276840 is an abundant number, since it is smaller than the sum of its proper divisors (29096140).

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

23276840 is a wasteful number, since it uses less digits than its factorization.

23276840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581932 (or 581928 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 23276840 is about 4824.6077560772. The cubic root of 23276840 is about 285.5231593188.

The spelling of 23276840 in words is "twenty-three million, two hundred seventy-six thousand, eight hundred forty".