23775642 has 24 divisors (see below), whose sum is σ = 56197440. Its totient is φ = 7204680.

The previous prime is 23775607. The next prime is 23775649. The reversal of 23775642 is 24657732.

It is a happy number.

23775642 is a `hidden beast` number, since 2 + 3 + 7 + 7 + 5 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 23775597 and 23775606.

It is not an unprimeable number, because it can be changed into a prime (23775649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59842 + ... + 60237.

It is an arithmetic number, because the mean of its divisors is an integer number (2341560).

Almost surely, 2^23775642 is an apocalyptic number.

23775642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23775642 is an abundant number, since it is smaller than the sum of its proper divisors (32421798).

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

23775642 is a wasteful number, since it uses less digits than its factorization.

23775642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120098 (or 120095 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 23775642 is about 4876.0272763798. The cubic root of 23775642 is about 287.5482646128.

The spelling of 23775642 in words is "twenty-three million, seven hundred seventy-five thousand, six hundred forty-two".