7905240 has 96 divisors (see below), whose sum is σ = 29371680. Its totient is φ = 1806336.

The previous prime is 7905239. The next prime is 7905253. The reversal of 7905240 is 425097.

7905240 = 274² + 275² + ... + 353².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 952 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (305955).

Almost surely, 2^7905240 is an apocalyptic number.

7905240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7905240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14685840).

7905240 is an abundant number, since it is smaller than the sum of its proper divisors (21466440).

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

7905240 is a wasteful number, since it uses less digits than its factorization.

7905240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161 (or 3154 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 7905240 is about 2811.6258641576. The cubic root of 7905240 is about 199.2071947854.

The spelling of 7905240 in words is "seven million, nine hundred five thousand, two hundred forty".