23780280 has 64 divisors (see below), whose sum is σ = 75543840. Its totient is φ = 5967872.

The previous prime is 23780279. The next prime is 23780291. The reversal of 23780280 is 8208732.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3789 + ... + 7868.

Almost surely, 2^23780280 is an apocalyptic number.

23780280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23780280 is an abundant number, since it is smaller than the sum of its proper divisors (51763560).

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

23780280 is a wasteful number, since it uses less digits than its factorization.

23780280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11688 (or 11684 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 23780280 is about 4876.5028452775. The cubic root of 23780280 is about 287.5669610886.

The spelling of 23780280 in words is "twenty-three million, seven hundred eighty thousand, two hundred eighty".