1622220400 has 30 divisors (see below), whose sum is σ = 3897385472. Its totient is φ = 648888000.

The previous prime is 1622220377. The next prime is 1622220401. The reversal of 1622220400 is 40222261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622220401) 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 5 ways as a sum of consecutive naturals, for example, 2027376 + ... + 2028175.

Almost surely, 2^1622220400 is an apocalyptic number.

1622220400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1622220400 is an abundant number, since it is smaller than the sum of its proper divisors (2275165072).

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

1622220400 is a wasteful number, since it uses less digits than its factorization.

1622220400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055569 (or 4055558 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1622220400 is about 40276.7972907479. The cubic root of 1622220400 is about 1174.9966259146.

Adding to 1622220400 its reverse (40222261), we get a palindrome (1662442661).

The spelling of 1622220400 in words is "one billion, six hundred twenty-two million, two hundred twenty thousand, four hundred".