23780530 has 16 divisors (see below), whose sum is σ = 43199640. Its totient is φ = 9424512.

The previous prime is 23780513. The next prime is 23780539. The reversal of 23780530 is 3508732.

It can be written as a sum of positive squares in 4 ways, for example, as 22061809 + 1718721 = 4697^2 + 1311^2 .

It is not an unprimeable number, because it can be changed into a prime (23780539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9819 + ... + 11998.

Almost surely, 2^23780530 is an apocalyptic number.

23780530 is a deficient number, since it is larger than the sum of its proper divisors (19419110).

23780530 is a wasteful number, since it uses less digits than its factorization.

23780530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21933.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 23780530 is about 4876.5284783337. The cubic root of 23780530 is about 287.5679688071.

It can be divided in two parts, 23780 and 530, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 23780530 in words is "twenty-three million, seven hundred eighty thousand, five hundred thirty".