7138336 has 24 divisors (see below), whose sum is σ = 14435820. Its totient is φ = 3472128.

The previous prime is 7138331. The next prime is 7138337. The reversal of 7138336 is 6338317.

It can be written as a sum of positive squares in 2 ways, for example, as 5550736 + 1587600 = 2356^2 + 1260^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7138298 and 7138307.

It is not an unprimeable number, because it can be changed into a prime (7138331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1831 + ... + 4198.

Almost surely, 2^7138336 is an apocalyptic number.

It is an amenable number.

7138336 is an abundant number, since it is smaller than the sum of its proper divisors (7297484).

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

7138336 is a wasteful number, since it uses less digits than its factorization.

7138336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076 (or 6068 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 7138336 is about 2671.7664568596. The cubic root of 7138336 is about 192.5450369690.

The spelling of 7138336 in words is "seven million, one hundred thirty-eight thousand, three hundred thirty-six".