1622408340 has 96 divisors (see below), whose sum is σ = 5223020544. Its totient is φ = 368599680.

The previous prime is 1622408321. The next prime is 1622408341. The reversal of 1622408340 is 438042261.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1622408298 and 1622408307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622408341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58575 + ... + 81705.

It is an arithmetic number, because the mean of its divisors is an integer number (54406464).

Almost surely, 2^1622408340 is an apocalyptic number.

1622408340 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 1622408340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2611510272).

1622408340 is an abundant number, since it is smaller than the sum of its proper divisors (3600612204).

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

1622408340 is a wasteful number, since it uses less digits than its factorization.

1622408340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23317 (or 23315 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1622408340 is about 40279.1303282482. The cubic root of 1622408340 is about 1175.0420000077.

The spelling of 1622408340 in words is "one billion, six hundred twenty-two million, four hundred eight thousand, three hundred forty".