7497940 has 24 divisors (see below), whose sum is σ = 15823080. Its totient is φ = 2984448.

The previous prime is 7497911. The next prime is 7497943. The reversal of 7497940 is 497947.

It can be written as a sum of positive squares in 4 ways, for example, as 1602756 + 5895184 = 1266^2 + 2428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7497893 and 7497902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7497943) by changing a digit.

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, 3856 + ... + 5464.

It is an arithmetic number, because the mean of its divisors is an integer number (659295).

Almost surely, 2^7497940 is an apocalyptic number.

It is an amenable number.

7497940 is an abundant number, since it is smaller than the sum of its proper divisors (8325140).

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

7497940 is a wasteful number, since it uses less digits than its factorization.

7497940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7497940 is about 2738.2366588737. The cubic root of 7497940 is about 195.7254590233.

The spelling of 7497940 in words is "seven million, four hundred ninety-seven thousand, nine hundred forty".