7813422 has 56 divisors (see below), whose sum is σ = 18414864. Its totient is φ = 2480544.

The previous prime is 7813417. The next prime is 7813423. The reversal of 7813422 is 2243187.

It is a super-2 number, since 2×7813422² = 122099126700168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7813423) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 33418 + ... + 33650.

Almost surely, 2^7813422 is an apocalyptic number.

7813422 is the 1398-th decagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7813422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9207432).

7813422 is an abundant number, since it is smaller than the sum of its proper divisors (10601442).

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

7813422 is a wasteful number, since it uses less digits than its factorization.

7813422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 261 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 7813422 is about 2795.2498993829. The cubic root of 7813422 is about 198.4329369691.

The spelling of 7813422 in words is "seven million, eight hundred thirteen thousand, four hundred twenty-two".