23428678 has 32 divisors (see below), whose sum is σ = 43686720. Its totient is φ = 9175680.

The previous prime is 23428673. The next prime is 23428739. The reversal of 23428678 is 87682432.

It is a self number, because there is not a number n which added to its sum of digits gives 23428678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23428673) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19248 + ... + 20428.

It is an arithmetic number, because the mean of its divisors is an integer number (1365210).

It is a vampire number, since it can be written as 2834 ⋅ 8267 (with its own digits).

Almost surely, 2^23428678 is an apocalyptic number.

23428678 is a deficient number, since it is larger than the sum of its proper divisors (20258042).

23428678 is a wasteful number, since it uses less digits than its factorization.

23428678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312.

The product of its digits is 129024, while the sum is 40.

The square root of 23428678 is about 4840.3179647622. The cubic root of 23428678 is about 286.1426497534.

The spelling of 23428678 in words is "twenty-three million, four hundred twenty-eight thousand, six hundred seventy-eight".