18769040 has 20 divisors (see below), whose sum is σ = 43638204. Its totient is φ = 7507584.

The previous prime is 18769019. The next prime is 18769073. The reversal of 18769040 is 4096781.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 16875664 = 1376^2 + 4108^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117227 + ... + 117386.

Almost surely, 2^18769040 is an apocalyptic number.

18769040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18769040 is an abundant number, since it is smaller than the sum of its proper divisors (24869164).

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

18769040 is a wasteful number, since it uses less digits than its factorization.

18769040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234626 (or 234620 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18769040 is about 4332.3250108920. The cubic root of 18769040 is about 265.7545364039.

It can be divided in two parts, 187690 and 40, that multiplied together give a square (7507600 = 2740²).

The spelling of 18769040 in words is "eighteen million, seven hundred sixty-nine thousand, forty".