7255920 has 120 divisors (see below), whose sum is σ = 26208144. Its totient is φ = 1655808.

The previous prime is 7255909. The next prime is 7255951. The reversal of 7255920 is 295527.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 11452 + ... + 12068.

Almost surely, 2^7255920 is an apocalyptic number.

7255920 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 7255920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13104072).

7255920 is an abundant number, since it is smaller than the sum of its proper divisors (18952224).

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

7255920 is a wasteful number, since it uses less digits than its factorization.

7255920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 7255920 is about 2693.6814956487. The cubic root of 7255920 is about 193.5964972160.

The spelling of 7255920 in words is "seven million, two hundred fifty-five thousand, nine hundred twenty".