247422 has 32 divisors (see below), whose sum is σ = 582912. Its totient is φ = 68544.

The previous prime is 247421. The next prime is 247433. The reversal of 247422 is 224742.

It is a super-2 number, since 2×247422² = 122435292168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (18216).

2²⁴⁷⁴²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291456).

247422 is an abundant number, since it is smaller than the sum of its proper divisors (335490).

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

247422 is a wasteful number, since it uses less digits than its factorization.

247422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its digits is 896, while the sum is 21.

The square root of 247422 is about 497.4153194263. The cubic root of 247422 is about 62.7787654552.

The spelling of 247422 in words is "two hundred forty-seven thousand, four hundred twenty-two", and thus it is an iban number.