18725736 has 32 divisors (see below), whose sum is σ = 48326400. Its totient is φ = 6040320.

The previous prime is 18725731. The next prime is 18725747. The reversal of 18725736 is 63752781.

It is a junction number, because it is equal to n+sod(n) for n = 18725694 and 18725703.

It is not an unprimeable number, because it can be changed into a prime (18725731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11841 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (1510200).

Almost surely, 2^18725736 is an apocalyptic number.

It is an amenable number.

18725736 is an abundant number, since it is smaller than the sum of its proper divisors (29600664).

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

18725736 is a wasteful number, since it uses less digits than its factorization.

18725736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25209 (or 25205 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 18725736 is about 4327.3243465218. The cubic root of 18725736 is about 265.5499957274.

The spelling of 18725736 in words is "eighteen million, seven hundred twenty-five thousand, seven hundred thirty-six".