23680290 has 16 divisors (see below), whose sum is σ = 56832768. Its totient is φ = 6314736.

The previous prime is 23680243. The next prime is 23680291. The reversal of 23680290 is 9208632.

It is a super-2 number, since 2×23680290² = 1121512268968200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 789343 = 23680290 / (2 + 3 + 6 + 8 + 0 + 2 + 9 + 0).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23680291) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 394642 + ... + 394701.

It is an arithmetic number, because the mean of its divisors is an integer number (3552048).

Almost surely, 2^23680290 is an apocalyptic number.

23680290 is an abundant number, since it is smaller than the sum of its proper divisors (33152478).

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

23680290 is a wasteful number, since it uses less digits than its factorization.

23680290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789353.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 23680290 is about 4866.2398214638. The cubic root of 23680290 is about 287.1633463334.

The spelling of 23680290 in words is "twenty-three million, six hundred eighty thousand, two hundred ninety".