23690394 has 80 divisors (see below), whose sum is σ = 65374848. Its totient is φ = 6244128.

The previous prime is 23690393. The next prime is 23690399. The reversal of 23690394 is 49309632.

It is a happy number.

It is a super-2 number, since 2×23690394² = 1122469535750472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23690393) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13939 + ... + 15545.

Almost surely, 2^23690394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23690394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32687424).

23690394 is an abundant number, since it is smaller than the sum of its proper divisors (41684454).

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

23690394 is a wasteful number, since it uses less digits than its factorization.

23690394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1632 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 23690394 is about 4867.2778839922. The cubic root of 23690394 is about 287.2041831908.

The spelling of 23690394 in words is "twenty-three million, six hundred ninety thousand, three hundred ninety-four".