7639140 has 48 divisors (see below), whose sum is σ = 22518720. Its totient is φ = 1929600.

The previous prime is 7639127. The next prime is 7639147. The reversal of 7639140 is 419367.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7639098 and 7639107.

It is not an unprimeable number, because it can be changed into a prime (7639147) 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, 2211 + ... + 4490.

It is an arithmetic number, because the mean of its divisors is an integer number (469140).

Almost surely, 2^7639140 is an apocalyptic number.

It is an amenable number.

7639140 is an abundant number, since it is smaller than the sum of its proper divisors (14879580).

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

7639140 is a wasteful number, since it uses less digits than its factorization.

7639140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732 (or 6730 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 7639140 is about 2763.8994192988. The cubic root of 7639140 is about 196.9464497529.

The spelling of 7639140 in words is "seven million, six hundred thirty-nine thousand, one hundred forty".