7440136 has 32 divisors (see below), whose sum is σ = 15487200. Its totient is φ = 3322240.

The previous prime is 7440127. The next prime is 7440151. The reversal of 7440136 is 6310447.

It is a self number, because there is not a number n which added to its sum of digits gives 7440136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4476 + ... + 5908.

It is an arithmetic number, because the mean of its divisors is an integer number (483975).

Almost surely, 2^7440136 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 7440136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7743600).

7440136 is an abundant number, since it is smaller than the sum of its proper divisors (8047064).

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

7440136 is a wasteful number, since it uses less digits than its factorization.

7440136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 7440136 is about 2727.6612692928. The cubic root of 7440136 is about 195.2211910390.

The spelling of 7440136 in words is "seven million, four hundred forty thousand, one hundred thirty-six".