18742276 has 48 divisors (see below), whose sum is σ = 39155200. Its totient is φ = 7682688.

The previous prime is 18742261. The next prime is 18742277. The reversal of 18742276 is 67224781.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (18742277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81730 + ... + 81958.

Almost surely, 2^18742276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18742276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19577600).

18742276 is an abundant number, since it is smaller than the sum of its proper divisors (20412924).

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

18742276 is a wasteful number, since it uses less digits than its factorization.

18742276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 18742276 is about 4329.2350363546. The cubic root of 18742276 is about 265.6281573973.

The spelling of 18742276 in words is "eighteen million, seven hundred forty-two thousand, two hundred seventy-six".