7022400 has 336 divisors, whose sum is σ = 30236160. Its totient is φ = 1382400.

The previous prime is 7022371. The next prime is 7022417. The reversal of 7022400 is 42207.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 7022400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369591 + ... + 369609.

Almost surely, 2^7022400 is an apocalyptic number.

7022400 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 7022400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15118080).

7022400 is an abundant number, since it is smaller than the sum of its proper divisors (23213760).

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

7022400 is a wasteful number, since it uses less digits than its factorization.

7022400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 7022400 is about 2649.9811320083. The cubic root of 7022400 is about 191.4969470071.

Adding to 7022400 its reverse (42207), we get a palindrome (7064607).

The spelling of 7022400 in words is "seven million, twenty-two thousand, four hundred".