7722270 has 64 divisors (see below), whose sum is σ = 21176640. Its totient is φ = 2001024.

The previous prime is 7722269. The next prime is 7722271. The reversal of 7722270 is 722277.

It is an interprime number because it is at equal distance from previous prime (7722269) and next prime (7722271).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7722271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9604 + ... + 10376.

It is an arithmetic number, because the mean of its divisors is an integer number (330885).

Almost surely, 2^7722270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7722270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10588320).

7722270 is an abundant number, since it is smaller than the sum of its proper divisors (13454370).

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

7722270 is a wasteful number, since it uses less digits than its factorization.

7722270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 7722270 is about 2778.8972633043. The cubic root of 7722270 is about 197.6582718916.

The spelling of 7722270 in words is "seven million, seven hundred twenty-two thousand, two hundred seventy".