820274344 has 16 divisors (see below), whose sum is σ = 1628486100. Its totient is φ = 386011392.

The previous prime is 820274339. The next prime is 820274347. The reversal of 820274344 is 443472028.

It can be written as a sum of positive squares in 2 ways, for example, as 801456100 + 18818244 = 28310^2 + 4338^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (820274347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3015579 + ... + 3015850.

Almost surely, 2^820274344 is an apocalyptic number.

It is an amenable number.

820274344 is a deficient number, since it is larger than the sum of its proper divisors (808211756).

820274344 is a wasteful number, since it uses less digits than its factorization.

820274344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031452 (or 6031448 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 34.

The square root of 820274344 is about 28640.4319799824. The cubic root of 820274344 is about 936.0945341245.

The spelling of 820274344 in words is "eight hundred twenty million, two hundred seventy-four thousand, three hundred forty-four".