23066820 has 72 divisors (see below), whose sum is σ = 79969344. Its totient is φ = 5272128.

The previous prime is 23066809. The next prime is 23066831. The reversal of 23066820 is 2866032.

It is an interprime number because it is at equal distance from previous prime (23066809) and next prime (23066831).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7894 + ... + 10413.

Almost surely, 2^23066820 is an apocalyptic number.

23066820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23066820 is an abundant number, since it is smaller than the sum of its proper divisors (56902524).

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

23066820 is a wasteful number, since it uses less digits than its factorization.

23066820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329 (or 18324 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 23066820 is about 4802.7929374480. The cubic root of 23066820 is about 284.6618334411.

The spelling of 23066820 in words is "twenty-three million, sixty-six thousand, eight hundred twenty".