7640380 has 24 divisors (see below), whose sum is σ = 17503920. Its totient is φ = 2778240.

The previous prime is 7640377. The next prime is 7640411. The reversal of 7640380 is 830467.

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, 17145 + ... + 17584.

It is an arithmetic number, because the mean of its divisors is an integer number (729330).

Almost surely, 2^7640380 is an apocalyptic number.

It is an amenable number.

7640380 is an abundant number, since it is smaller than the sum of its proper divisors (9863540).

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

7640380 is a wasteful number, since it uses less digits than its factorization.

7640380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34749 (or 34747 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7640380 is about 2764.1237309498. The cubic root of 7640380 is about 196.9571054195.

The spelling of 7640380 in words is "seven million, six hundred forty thousand, three hundred eighty".