1622140820 has 24 divisors (see below), whose sum is σ = 3439572864. Its totient is φ = 642555936.

The previous prime is 1622140801. The next prime is 1622140841. The reversal of 1622140820 is 280412261.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1622140820.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391664 + ... + 395783.

It is an arithmetic number, because the mean of its divisors is an integer number (143315536).

Almost surely, 2^1622140820 is an apocalyptic number.

1622140820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622140820 is an abundant number, since it is smaller than the sum of its proper divisors (1817432044).

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

1622140820 is a wasteful number, since it uses less digits than its factorization.

1622140820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787559 (or 787557 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 1622140820 is about 40275.8093649277. The cubic root of 1622140820 is about 1174.9774119696.

The spelling of 1622140820 in words is "one billion, six hundred twenty-two million, one hundred forty thousand, eight hundred twenty".