7423940 has 24 divisors (see below), whose sum is σ = 16269120. Its totient is φ = 2840288.

The previous prime is 7423937. The next prime is 7423961. The reversal of 7423940 is 493247.

It is a super-2 number, since 2×7423940² = 110229770247200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7610 + ... + 8529.

It is an arithmetic number, because the mean of its divisors is an integer number (677880).

Almost surely, 2^7423940 is an apocalyptic number.

It is an amenable number.

7423940 is an abundant number, since it is smaller than the sum of its proper divisors (8845180).

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

7423940 is a wasteful number, since it uses less digits than its factorization.

7423940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171 (or 16169 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 7423940 is about 2724.6908081469. The cubic root of 7423940 is about 195.0794329028.

The spelling of 7423940 in words is "seven million, four hundred twenty-three thousand, nine hundred forty".