7172040 has 64 divisors (see below), whose sum is σ = 21902400. Its totient is φ = 1878272.

The previous prime is 7172029. The next prime is 7172093. The reversal of 7172040 is 402717.

It is a junction number, because it is equal to n+sod(n) for n = 7171998 and 7172016.

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, 6574 + ... + 7586.

It is an arithmetic number, because the mean of its divisors is an integer number (342225).

Almost surely, 2^7172040 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 7172040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10951200).

7172040 is an abundant number, since it is smaller than the sum of its proper divisors (14730360).

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

7172040 is a wasteful number, since it uses less digits than its factorization.

7172040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 7172040 is about 2678.0664666882. The cubic root of 7172040 is about 192.8475981951.

Adding to 7172040 its reverse (402717), we get a palindrome (7574757).

The spelling of 7172040 in words is "seven million, one hundred seventy-two thousand, forty".