7157040 has 80 divisors (see below), whose sum is σ = 24212736. Its totient is φ = 1734400.

The previous prime is 7157039. The next prime is 7157041. The reversal of 7157040 is 407517.

It is an interprime number because it is at equal distance from previous prime (7157039) and next prime (7157041).

It is a tau number, because it is divible by the number of its divisors (80).

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 7157040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7157041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285 + ... + 3995.

Almost surely, 2^7157040 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 7157040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12106368).

7157040 is an abundant number, since it is smaller than the sum of its proper divisors (17055696).

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

7157040 is a wasteful number, since it uses less digits than its factorization.

7157040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2732 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 7157040 is about 2675.2644729073. The cubic root of 7157040 is about 192.7130603239.

The spelling of 7157040 in words is "seven million, one hundred fifty-seven thousand, forty".