7261720 has 64 divisors (see below), whose sum is σ = 17690400. Its totient is φ = 2672640.

The previous prime is 7261699. The next prime is 7261739. The reversal of 7261720 is 271627.

7261720 = 108² + 109² + ... + 284².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40030 + ... + 40210.

Almost surely, 2^7261720 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 7261720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8845200).

7261720 is an abundant number, since it is smaller than the sum of its proper divisors (10428680).

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

7261720 is a wasteful number, since it uses less digits than its factorization.

7261720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 7261720 is about 2694.7578740956. The cubic root of 7261720 is about 193.6480670896.

The spelling of 7261720 in words is "seven million, two hundred sixty-one thousand, seven hundred twenty".