23069640 has 64 divisors (see below), whose sum is σ = 75504960. Its totient is φ = 5592320.

The previous prime is 23069639. The next prime is 23069647. The reversal of 23069640 is 4696032.

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 = 23069598 and 23069607.

It is not an unprimeable number, because it can be changed into a prime (23069647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7419 + ... + 10058.

It is an arithmetic number, because the mean of its divisors is an integer number (1179765).

Almost surely, 2^23069640 is an apocalyptic number.

23069640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23069640 is an abundant number, since it is smaller than the sum of its proper divisors (52435320).

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

23069640 is a wasteful number, since it uses less digits than its factorization.

23069640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17502 (or 17498 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 23069640 is about 4803.0865076532. The cubic root of 23069640 is about 284.6734332724.

The spelling of 23069640 in words is "twenty-three million, sixty-nine thousand, six hundred forty".