23002780 has 12 divisors (see below), whose sum is σ = 48305880. Its totient is φ = 9201104.

The previous prime is 23002729. The next prime is 23002781. The reversal of 23002780 is 8720032.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23002781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575050 + ... + 575089.

It is an arithmetic number, because the mean of its divisors is an integer number (4025490).

Almost surely, 2^23002780 is an apocalyptic number.

23002780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23002780 is an abundant number, since it is smaller than the sum of its proper divisors (25303100).

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

23002780 is a wasteful number, since it uses less digits than its factorization.

23002780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150148 (or 1150146 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 23002780 is about 4796.1213495907. The cubic root of 23002780 is about 284.3981554224.

The spelling of 23002780 in words is "twenty-three million, two thousand, seven hundred eighty".