322155480 has 128 divisors (see below), whose sum is σ = 1016478720. Its totient is φ = 81523200.

The previous prime is 322155419. The next prime is 322155481. The reversal of 322155480 is 84551223.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322155481) 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, 416374 + ... + 417146.

It is an arithmetic number, because the mean of its divisors is an integer number (7941240).

Almost surely, 2^322155480 is an apocalyptic number.

322155480 is a gapful number since it is divisible by the number (30) 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 322155480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508239360).

322155480 is an abundant number, since it is smaller than the sum of its proper divisors (694323240).

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

322155480 is a wasteful number, since it uses less digits than its factorization.

322155480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 322155480 is about 17948.6902029090. The cubic root of 322155480 is about 685.5227011897.

It can be divided in two parts, 32 and 2155480, that added together give a palindrome (2155512).

The spelling of 322155480 in words is "three hundred twenty-two million, one hundred fifty-five thousand, four hundred eighty".