1021473800 has 96 divisors (see below), whose sum is σ = 2454009600. Its totient is φ = 395124480.

The previous prime is 1021473797. The next prime is 1021473809. The reversal of 1021473800 is 83741201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021473800.

It is not an unprimeable number, because it can be changed into a prime (1021473809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1649891 + ... + 1650509.

It is an arithmetic number, because the mean of its divisors is an integer number (25562600).

Almost surely, 2^1021473800 is an apocalyptic number.

1021473800 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 1021473800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227004800).

1021473800 is an abundant number, since it is smaller than the sum of its proper divisors (1432535800).

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

1021473800 is a wasteful number, since it uses less digits than its factorization.

1021473800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1021473800 is about 31960.5037507233. The cubic root of 1021473800 is about 1007.1072999487.

The spelling of 1021473800 in words is "one billion, twenty-one million, four hundred seventy-three thousand, eight hundred".