7938780 has 24 divisors (see below), whose sum is σ = 22228752. Its totient is φ = 2116992.

The previous prime is 7938773. The next prime is 7938787. The reversal of 7938780 is 878397.

7938780 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7938773) and next prime (7938787).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7938787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66097 + ... + 66216.

It is an arithmetic number, because the mean of its divisors is an integer number (926198).

Almost surely, 2^7938780 is an apocalyptic number.

It is an amenable number.

7938780 is an abundant number, since it is smaller than the sum of its proper divisors (14289972).

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

7938780 is a wasteful number, since it uses less digits than its factorization.

7938780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132325 (or 132323 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 7938780 is about 2817.5840715052. The cubic root of 7938780 is about 199.4885264223.

The spelling of 7938780 in words is "seven million, nine hundred thirty-eight thousand, seven hundred eighty".