7841940 has 24 divisors (see below), whose sum is σ = 21957600. Its totient is φ = 2091168.

The previous prime is 7841929. The next prime is 7841957. The reversal of 7841940 is 491487.

It is a super-2 number, since 2×7841940² = 122992045927200, which contains 22 as substring.

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, 65290 + ... + 65409.

It is an arithmetic number, because the mean of its divisors is an integer number (914900).

Almost surely, 2^7841940 is an apocalyptic number.

It is an amenable number.

7841940 is an abundant number, since it is smaller than the sum of its proper divisors (14115660).

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

7841940 is a wasteful number, since it uses less digits than its factorization.

7841940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130711 (or 130709 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7841940 is about 2800.3464071432. The cubic root of 7841940 is about 198.6740622044.

The spelling of 7841940 in words is "seven million, eight hundred forty-one thousand, nine hundred forty".