23772738 has 16 divisors (see below), whose sum is σ = 51867936. Its totient is φ = 7203840.

The previous prime is 23772733. The next prime is 23772761. The reversal of 23772738 is 83727732.

It is a junction number, because it is equal to n+sod(n) for n = 23772696 and 23772705.

It is not an unprimeable number, because it can be changed into a prime (23772733) 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 7 ways as a sum of consecutive naturals, for example, 180031 + ... + 180162.

It is an arithmetic number, because the mean of its divisors is an integer number (3241746).

Almost surely, 2^23772738 is an apocalyptic number.

23772738 is an abundant number, since it is smaller than the sum of its proper divisors (28095198).

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

23772738 is a wasteful number, since it uses less digits than its factorization.

23772738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360209.

The product of its digits is 98784, while the sum is 39.

The square root of 23772738 is about 4875.7294838824. The cubic root of 23772738 is about 287.5365569141.

It can be divided in two parts, 2377 and 2738, that added together give a palindrome (5115).

The spelling of 23772738 in words is "twenty-three million, seven hundred seventy-two thousand, seven hundred thirty-eight".