1020998220 has 48 divisors (see below), whose sum is σ = 3118687488. Its totient is φ = 247514560.

The previous prime is 1020998219. The next prime is 1020998243. The reversal of 1020998220 is 228990201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772824 + ... + 774143.

It is an arithmetic number, because the mean of its divisors is an integer number (64972656).

Almost surely, 2^1020998220 is an apocalyptic number.

1020998220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020998220 is an abundant number, since it is smaller than the sum of its proper divisors (2097689268).

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

1020998220 is a wasteful number, since it uses less digits than its factorization.

1020998220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546990 (or 1546988 counting only the distinct ones).

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

The square root of 1020998220 is about 31953.0627639981. The cubic root of 1020998220 is about 1006.9509786149.

The spelling of 1020998220 in words is "one billion, twenty million, nine hundred ninety-eight thousand, two hundred twenty".