1020994800 has 120 divisors (see below), whose sum is σ = 3737844096. Its totient is φ = 233368320.

The previous prime is 1020994781. The next prime is 1020994801. The reversal of 1020994800 is 84990201.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020994801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52374 + ... + 69173.

Almost surely, 2^1020994800 is an apocalyptic number.

1020994800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020994800 is an abundant number, since it is smaller than the sum of its proper divisors (2716849296).

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

1020994800 is a wasteful number, since it uses less digits than its factorization.

1020994800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121575 (or 121564 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1020994800 is about 31953.0092479566. The cubic root of 1020994800 is about 1006.9498542981.

The spelling of 1020994800 in words is "one billion, twenty million, nine hundred ninety-four thousand, eight hundred".