7275840 has 224 divisors, whose sum is σ = 27651456. Its totient is φ = 1597440.

The previous prime is 7275833. The next prime is 7275857. The reversal of 7275840 is 485727.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137254 + ... + 137306.

It is an arithmetic number, because the mean of its divisors is an integer number (123444).

Almost surely, 2^7275840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7275840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13825728).

7275840 is an abundant number, since it is smaller than the sum of its proper divisors (20375616).

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

7275840 is a wasteful number, since it uses less digits than its factorization.

7275840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 7275840 is about 2697.3765031971. The cubic root of 7275840 is about 193.7734983640.

The spelling of 7275840 in words is "seven million, two hundred seventy-five thousand, eight hundred forty".