1622705148 has 72 divisors (see below), whose sum is σ = 4351484592. Its totient is φ = 508104192.

The previous prime is 1622705111. The next prime is 1622705153. The reversal of 1622705148 is 8415072261.

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

It is a congruent number.

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, 356986 + ... + 361502.

It is an arithmetic number, because the mean of its divisors is an integer number (60437286).

Almost surely, 2^1622705148 is an apocalyptic number.

1622705148 is a gapful number since it is divisible by the number (18) 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 1622705148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2175742296).

1622705148 is an abundant number, since it is smaller than the sum of its proper divisors (2728779444).

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

1622705148 is a wasteful number, since it uses less digits than its factorization.

1622705148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131 (or 5126 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1622705148 is about 40282.8145491350. The cubic root of 1622705148 is about 1175.1136508146.

The spelling of 1622705148 in words is "one billion, six hundred twenty-two million, seven hundred five thousand, one hundred forty-eight".