7790940 has 36 divisors (see below), whose sum is σ = 23633064. Its totient is φ = 2077536.

The previous prime is 7790929. The next prime is 7790953. The reversal of 7790940 is 490977.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 7790895 and 7790904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21462 + ... + 21821.

It is an arithmetic number, because the mean of its divisors is an integer number (656474).

Almost surely, 2^7790940 is an apocalyptic number.

It is an amenable number.

7790940 is an abundant number, since it is smaller than the sum of its proper divisors (15842124).

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

7790940 is a wasteful number, since it uses less digits than its factorization.

7790940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43298 (or 43293 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 7790940 is about 2791.2255372864. The cubic root of 7790940 is about 198.2424333744.

The spelling of 7790940 in words is "seven million, seven hundred ninety thousand, nine hundred forty".