820898544 has 40 divisors (see below), whose sum is σ = 2123944912. Its totient is φ = 273208320.

The previous prime is 820898501. The next prime is 820898581. The reversal of 820898544 is 445898028.

It is a super-4 number, since 4×820898544⁴ (a number of 37 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 820898493 and 820898502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18792 + ... + 44664.

Almost surely, 2^820898544 is an apocalyptic number.

It is an amenable number.

820898544 is an abundant number, since it is smaller than the sum of its proper divisors (1303046368).

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

820898544 is a wasteful number, since it uses less digits than its factorization.

820898544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26545 (or 26539 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 820898544 is about 28651.3270896829. The cubic root of 820898544 is about 936.3319189547.

The spelling of 820898544 in words is "eight hundred twenty million, eight hundred ninety-eight thousand, five hundred forty-four".