1623361872 has 240 divisors, whose sum is σ = 4922542080. Its totient is φ = 456576000.

The previous prime is 1623361867. The next prime is 1623361889. The reversal of 1623361872 is 2781633261.

It is a self number, because there is not a number n which added to its sum of digits gives 1623361872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27514579 + ... + 27514637.

It is an arithmetic number, because the mean of its divisors is an integer number (20510592).

Almost surely, 2^1623361872 is an apocalyptic number.

1623361872 is a gapful number since it is divisible by the number (12) 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 1623361872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2461271040).

1623361872 is an abundant number, since it is smaller than the sum of its proper divisors (3299180208).

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

1623361872 is a wasteful number, since it uses less digits than its factorization.

1623361872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 147 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 1623361872 is about 40290.9651410834. The cubic root of 1623361872 is about 1175.2721559408.

The spelling of 1623361872 in words is "one billion, six hundred twenty-three million, three hundred sixty-one thousand, eight hundred seventy-two".