7156940 has 72 divisors (see below), whose sum is σ = 17907120. Its totient is φ = 2395008.

The previous prime is 7156927. The next prime is 7156967. The reversal of 7156940 is 496517.

It is a happy number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 7156897 and 7156906.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65606 + ... + 65714.

It is an arithmetic number, because the mean of its divisors is an integer number (248710).

Almost surely, 2^7156940 is an apocalyptic number.

7156940 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 7156940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8953560).

7156940 is an abundant number, since it is smaller than the sum of its proper divisors (10750180).

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

7156940 is a wasteful number, since it uses less digits than its factorization.

7156940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 7156940 is about 2675.2457831011. The cubic root of 7156940 is about 192.7121627743.

The spelling of 7156940 in words is "seven million, one hundred fifty-six thousand, nine hundred forty".