23294640 has 120 divisors (see below), whose sum is σ = 75356784. Its totient is φ = 5952000.

The previous prime is 23294639. The next prime is 23294669. The reversal of 23294640 is 4649232.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 23294598 and 23294607.

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, 230590 + ... + 230690.

Almost surely, 2^23294640 is an apocalyptic number.

23294640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23294640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37678392).

23294640 is an abundant number, since it is smaller than the sum of its proper divisors (52062144).

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

23294640 is a wasteful number, since it uses less digits than its factorization.

23294640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 23294640 is about 4826.4521130951. The cubic root of 23294640 is about 285.5959214476.

The spelling of 23294640 in words is "twenty-three million, two hundred ninety-four thousand, six hundred forty".