23389740 has 72 divisors (see below), whose sum is σ = 77405328. Its totient is φ = 5669760.

The previous prime is 23389687. The next prime is 23389753. The reversal of 23389740 is 4798332.

23389740 = T₂₃₉ + T₂₄₀ + ... + T₅₃₅.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23389695 and 23389704.

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, 3927 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (1075074).

Almost surely, 2^23389740 is an apocalyptic number.

23389740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23389740 is an abundant number, since it is smaller than the sum of its proper divisors (54015588).

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

23389740 is a wasteful number, since it uses less digits than its factorization.

23389740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839 (or 11834 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 23389740 is about 4836.2940357261. The cubic root of 23389740 is about 285.9840407089.

The spelling of 23389740 in words is "twenty-three million, three hundred eighty-nine thousand, seven hundred forty".