867401020 has 48 divisors (see below), whose sum is σ = 1887631200. Its totient is φ = 334414080.

The previous prime is 867401011. The next prime is 867401033. The reversal of 867401020 is 20104768.

It is a self number, because there is not a number n which added to its sum of digits gives 867401020.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 497350 + ... + 499090.

It is an arithmetic number, because the mean of its divisors is an integer number (39325650).

Almost surely, 2^867401020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 867401020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943815600).

867401020 is an abundant number, since it is smaller than the sum of its proper divisors (1020230180).

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

867401020 is a wasteful number, since it uses less digits than its factorization.

867401020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 867401020 is about 29451.6726180365. The cubic root of 867401020 is about 953.6887131984.

Adding to 867401020 its reverse (20104768), we get a palindrome (887505788).

The spelling of 867401020 in words is "eight hundred sixty-seven million, four hundred one thousand, twenty".