7422400 has 42 divisors (see below), whose sum is σ = 18267680. Its totient is φ = 2968320.

The previous prime is 7422397. The next prime is 7422403. The reversal of 7422400 is 42247.

It is an interprime number because it is at equal distance from previous prime (7422397) and next prime (7422403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7422403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 720 + ... + 3919.

Almost surely, 2^7422400 is an apocalyptic number.

It is an amenable number.

7422400 is an abundant number, since it is smaller than the sum of its proper divisors (10845280).

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

7422400 is a wasteful number, since it uses less digits than its factorization.

7422400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4661 (or 4646 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 7422400 is about 2724.4081926173. The cubic root of 7422400 is about 195.0659430712.

Adding to 7422400 its reverse (42247), we get a palindrome (7464647).

The spelling of 7422400 in words is "seven million, four hundred twenty-two thousand, four hundred".