7742040 has 64 divisors (see below), whose sum is σ = 23436000. Its totient is φ = 2045952.

The previous prime is 7742029. The next prime is 7742041. The reversal of 7742040 is 402477.

7742040 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 7742040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7742041) 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, 17664 + ... + 18096.

Almost surely, 2^7742040 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 7742040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11718000).

7742040 is an abundant number, since it is smaller than the sum of its proper divisors (15693960).

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

7742040 is a wasteful number, since it uses less digits than its factorization.

7742040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 592 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7742040 is about 2782.4521559229. The cubic root of 7742040 is about 197.8268049796.

The spelling of 7742040 in words is "seven million, seven hundred forty-two thousand, forty".