820901748 has 12 divisors (see below), whose sum is σ = 1915437440. Its totient is φ = 273633912.

The previous prime is 820901723. The next prime is 820901749. The reversal of 820901748 is 847109028.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820901749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34204228 + ... + 34204251.

Almost surely, 2^820901748 is an apocalyptic number.

It is an amenable number.

820901748 is an abundant number, since it is smaller than the sum of its proper divisors (1094535692).

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

820901748 is a wasteful number, since it uses less digits than its factorization.

820901748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68408486 (or 68408484 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 820901748 is about 28651.3830032688. The cubic root of 820901748 is about 936.3331371335. Note that the first 3 decimals are identical.

It can be divided in two parts, 82090 and 1748, that added together give a palindrome (83838).

The spelling of 820901748 in words is "eight hundred twenty million, nine hundred one thousand, seven hundred forty-eight".