7120400 has 60 divisors (see below), whose sum is σ = 19558272. Its totient is φ = 2440320.

The previous prime is 7120387. The next prime is 7120411. The reversal of 7120400 is 40217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1529 + ... + 4071.

Almost surely, 2^7120400 is an apocalyptic number.

7120400 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 7120400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9779136).

7120400 is an abundant number, since it is smaller than the sum of its proper divisors (12437872).

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

7120400 is a wasteful number, since it uses less digits than its factorization.

7120400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568 (or 2557 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 7120400 is about 2668.4077649415. The cubic root of 7120400 is about 192.3836368764.

Adding to 7120400 its reverse (40217), we get a palindrome (7160617).

The spelling of 7120400 in words is "seven million, one hundred twenty thousand, four hundred".