798521220 has 192 divisors, whose sum is σ = 2860032000. Its totient is φ = 181180800.

The previous prime is 798521201. The next prime is 798521237. The reversal of 798521220 is 22125897.

It is a super-2 number, since 2×798521220² = 1275272277580576800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 570081 + ... + 571479.

It is an arithmetic number, because the mean of its divisors is an integer number (14896000).

Almost surely, 2^798521220 is an apocalyptic number.

798521220 is a gapful number since it is divisible by the number (70) 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 798521220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430016000).

798521220 is an abundant number, since it is smaller than the sum of its proper divisors (2061510780).

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

798521220 is a wasteful number, since it uses less digits than its factorization.

798521220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 798521220 is about 28258.1177717130. The cubic root of 798521220 is about 927.7454231954.

The spelling of 798521220 in words is "seven hundred ninety-eight million, five hundred twenty-one thousand, two hundred twenty".