1622384640 has 336 divisors, whose sum is σ = 5867997408. Its totient is φ = 429981696.

The previous prime is 1622384639. The next prime is 1622384683. The reversal of 1622384640 is 464832261.

1622384640 is a `hidden beast` number, since 1 + 6 + 2 + 2 + 3 + 8 + 4 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1622384595 and 1622384604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9953199 + ... + 9953361.

It is an arithmetic number, because the mean of its divisors is an integer number (17464278).

Almost surely, 2^1622384640 is an apocalyptic number.

1622384640 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 1622384640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2933998704).

1622384640 is an abundant number, since it is smaller than the sum of its proper divisors (4245612768).

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

1622384640 is an frugal number, since it uses more digits than its factorization.

1622384640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1622384640 is about 40278.8361301565. The cubic root of 1622384640 is about 1175.0362783427.

The spelling of 1622384640 in words is "one billion, six hundred twenty-two million, three hundred eighty-four thousand, six hundred forty".