1622273280 has 144 divisors (see below), whose sum is σ = 5486128704. Its totient is φ = 407142400.

The previous prime is 1622273231. The next prime is 1622273293. The reversal of 1622273280 is 823722261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52855 + ... + 77705.

It is an arithmetic number, because the mean of its divisors is an integer number (38098116).

Almost surely, 2^1622273280 is an apocalyptic number.

1622273280 is a gapful number since it is divisible by the number (10) 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 1622273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2743064352).

1622273280 is an abundant number, since it is smaller than the sum of its proper divisors (3863855424).

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

1622273280 is a wasteful number, since it uses less digits than its factorization.

1622273280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24892 (or 24878 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1622273280 is about 40277.4537427579. The cubic root of 1622273280 is about 1175.0093930138.

The spelling of 1622273280 in words is "one billion, six hundred twenty-two million, two hundred seventy-three thousand, two hundred eighty".