1622276420 has 12 divisors (see below), whose sum is σ = 3406780524. Its totient is φ = 648910560.

The previous prime is 1622276419. The next prime is 1622276431. The reversal of 1622276420 is 246722261.

It can be written as a sum of positive squares in 2 ways, for example, as 882327616 + 739948804 = 29704^2 + 27202^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40556891 + ... + 40556930.

It is an arithmetic number, because the mean of its divisors is an integer number (283898377).

Almost surely, 2^1622276420 is an apocalyptic number.

1622276420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622276420 is an abundant number, since it is smaller than the sum of its proper divisors (1784504104).

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

1622276420 is a wasteful number, since it uses less digits than its factorization.

1622276420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81113830 (or 81113828 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1622276420 is about 40277.4927223629. The cubic root of 1622276420 is about 1175.0101511119.

Adding to 1622276420 its reverse (246722261), we get a palindrome (1868998681).

The spelling of 1622276420 in words is "one billion, six hundred twenty-two million, two hundred seventy-six thousand, four hundred twenty".