820854030 has 32 divisors (see below), whose sum is σ = 2018102688. Its totient is φ = 213555200.

The previous prime is 820854029. The next prime is 820854037. The reversal of 820854030 is 30458028.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820854037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332451 + ... + 334910.

It is an arithmetic number, because the mean of its divisors is an integer number (63065709).

Almost surely, 2^820854030 is an apocalyptic number.

820854030 is an abundant number, since it is smaller than the sum of its proper divisors (1197248658).

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

820854030 is a wasteful number, since it uses less digits than its factorization.

820854030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667412.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 820854030 is about 28650.5502564959. The cubic root of 820854030 is about 936.3149941541.

The spelling of 820854030 in words is "eight hundred twenty million, eight hundred fifty-four thousand, thirty".