7901740 has 72 divisors (see below), whose sum is σ = 21086352. Its totient is φ = 2459520.

The previous prime is 7901713. The next prime is 7901741. The reversal of 7901740 is 471097.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 7901699 and 7901708.

It is not an unprimeable number, because it can be changed into a prime (7901741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10414 + ... + 11146.

It is an arithmetic number, because the mean of its divisors is an integer number (292866).

Almost surely, 2^7901740 is an apocalyptic number.

7901740 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7901740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10543176).

7901740 is an abundant number, since it is smaller than the sum of its proper divisors (13184612).

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

7901740 is a wasteful number, since it uses less digits than its factorization.

7901740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 7901740 is about 2811.0033795782. The cubic root of 7901740 is about 199.1777911618.

The spelling of 7901740 in words is "seven million, nine hundred one thousand, seven hundred forty".