7620240 has 40 divisors (see below), whose sum is σ = 23623488. Its totient is φ = 2032000.

The previous prime is 7620227. The next prime is 7620241. The reversal of 7620240 is 420267.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (7620241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15636 + ... + 16115.

Almost surely, 2^7620240 is an apocalyptic number.

It is an amenable number.

7620240 is an abundant number, since it is smaller than the sum of its proper divisors (16003248).

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

7620240 is a wasteful number, since it uses less digits than its factorization.

7620240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31767 (or 31761 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 7620240 is about 2760.4782194395. The cubic root of 7620240 is about 196.7838938501.

The spelling of 7620240 in words is "seven million, six hundred twenty thousand, two hundred forty".