838940580 has 36 divisors (see below), whose sum is σ = 2544786972. Its totient is φ = 223717440.

The previous prime is 838940563. The next prime is 838940581. The reversal of 838940580 is 85049838.

It can be written as a sum of positive squares in 2 ways, for example, as 476723556 + 362217024 = 21834^2 + 19032^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (838940581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2330211 + ... + 2330570.

It is an arithmetic number, because the mean of its divisors is an integer number (70688527).

Almost surely, 2^838940580 is an apocalyptic number.

It is an amenable number.

838940580 is an abundant number, since it is smaller than the sum of its proper divisors (1705846392).

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

838940580 is a wasteful number, since it uses less digits than its factorization.

838940580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660796 (or 4660791 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 838940580 is about 28964.4709946514. The cubic root of 838940580 is about 943.1419609823.

The spelling of 838940580 in words is "eight hundred thirty-eight million, nine hundred forty thousand, five hundred eighty".