7271940 has 48 divisors (see below), whose sum is σ = 21930048. Its totient is φ = 1789824.

The previous prime is 7271939. The next prime is 7271963. The reversal of 7271940 is 491727.

7271940 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7271940² = 105762222727200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7271898 and 7271907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3882 + ... + 5441.

It is an arithmetic number, because the mean of its divisors is an integer number (456876).

Almost surely, 2^7271940 is an apocalyptic number.

It is an amenable number.

7271940 is an abundant number, since it is smaller than the sum of its proper divisors (14658108).

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

7271940 is a wasteful number, since it uses less digits than its factorization.

7271940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9348 (or 9346 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 7271940 is about 2696.6534816324. The cubic root of 7271940 is about 193.7388699815.

The spelling of 7271940 in words is "seven million, two hundred seventy-one thousand, nine hundred forty".