1622047240 has 128 divisors (see below), whose sum is σ = 4064670720. Its totient is φ = 577657600.

The previous prime is 1622047213. The next prime is 1622047241. The reversal of 1622047240 is 427402261.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1622047199 and 1622047208.

It is not an unprimeable number, because it can be changed into a prime (1622047241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6167349 + ... + 6167611.

It is an arithmetic number, because the mean of its divisors is an integer number (31755240).

Almost surely, 2^1622047240 is an apocalyptic number.

1622047240 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 1622047240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032335360).

1622047240 is an abundant number, since it is smaller than the sum of its proper divisors (2442623480).

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

1622047240 is a wasteful number, since it uses less digits than its factorization.

1622047240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1622047240 is about 40274.6476086384. The cubic root of 1622047240 is about 1174.9548170343.

It can be divided in two parts, 162 and 2047240, that added together give a palindrome (2047402).

The spelling of 1622047240 in words is "one billion, six hundred twenty-two million, forty-seven thousand, two hundred forty".