1550720832 has 56 divisors (see below), whose sum is σ = 4111361856. Its totient is φ = 515847168.

The previous prime is 1550720761. The next prime is 1550720849. The reversal of 1550720832 is 2380270551.

It is a junction number, because it is equal to n+sod(n) for n = 1550720793 and 1550720802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88548 + ... + 104604.

It is an arithmetic number, because the mean of its divisors is an integer number (73417176).

Almost surely, 2^1550720832 is an apocalyptic number.

1550720832 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 1550720832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2055680928).

1550720832 is an abundant number, since it is smaller than the sum of its proper divisors (2560641024).

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

1550720832 is a wasteful number, since it uses less digits than its factorization.

1550720832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16575 (or 16565 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 1550720832 is about 39379.1928815206. The cubic root of 1550720832 is about 1157.4739005197.

The spelling of 1550720832 in words is "one billion, five hundred fifty million, seven hundred twenty thousand, eight hundred thirty-two".