7641240 has 64 divisors (see below), whose sum is σ = 23556960. Its totient is φ = 1981440.

The previous prime is 7641223. The next prime is 7641241. The reversal of 7641240 is 421467.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 7641240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7641241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3580 + ... + 5300.

Almost surely, 2^7641240 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 7641240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11778480).

7641240 is an abundant number, since it is smaller than the sum of its proper divisors (15915720).

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

7641240 is a wasteful number, since it uses less digits than its factorization.

7641240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 7641240 is about 2764.2792912439. The cubic root of 7641240 is about 196.9644949627.

The spelling of 7641240 in words is "seven million, six hundred forty-one thousand, two hundred forty".