8742492 has 90 divisors (see below), whose sum is σ = 25233824. Its totient is φ = 2637360.

The previous prime is 8742469. The next prime is 8742493. The reversal of 8742492 is 2942478.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 39093 + ... + 39315.

Almost surely, 2^8742492 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 8742492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12616912).

8742492 is an abundant number, since it is smaller than the sum of its proper divisors (16491332).

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

8742492 is a wasteful number, since it uses less digits than its factorization.

8742492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 239 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 8742492 is about 2956.7705355675. The cubic root of 8742492 is about 206.0053098201.

The spelling of 8742492 in words is "eight million, seven hundred forty-two thousand, four hundred ninety-two".