7249720 has 16 divisors (see below), whose sum is σ = 16311960. Its totient is φ = 2899872.

The previous prime is 7249717. The next prime is 7249727. The reversal of 7249720 is 279427.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7249727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90582 + ... + 90661.

Almost surely, 2^7249720 is an apocalyptic number.

It is an amenable number.

7249720 is an abundant number, since it is smaller than the sum of its proper divisors (9062240).

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

7249720 is a wasteful number, since it uses less digits than its factorization.

7249720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181254 (or 181250 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 7249720 is about 2692.5304083705. The cubic root of 7249720 is about 193.5413404006.

The spelling of 7249720 in words is "seven million, two hundred forty-nine thousand, seven hundred twenty".