23401645 has 8 divisors (see below), whose sum is σ = 28111104. Its totient is φ = 18701904.

The previous prime is 23401633. The next prime is 23401667. The reversal of 23401645 is 54610432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23401645 - 2⁷ = 23401517 is a prime.

It is a super-3 number, since 3×23401645³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4872 + ... + 8398.

It is an arithmetic number, because the mean of its divisors is an integer number (3513888).

Almost surely, 2^23401645 is an apocalyptic number.

It is an amenable number.

23401645 is a deficient number, since it is larger than the sum of its proper divisors (4709459).

23401645 is a wasteful number, since it uses less digits than its factorization.

23401645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 23401645 is about 4837.5246769396. The cubic root of 23401645 is about 286.0325528989.

The spelling of 23401645 in words is "twenty-three million, four hundred one thousand, six hundred forty-five".