838260780 has 96 divisors (see below), whose sum is σ = 2726492160. Its totient is φ = 188455680.

The previous prime is 838260779. The next prime is 838260799. The reversal of 838260780 is 87062838.

It is a super-2 number, since 2×838260780² = 1405362270572416800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9261 + ... + 41979.

It is an arithmetic number, because the mean of its divisors is an integer number (28400960).

Almost surely, 2^838260780 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 838260780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363246080).

838260780 is an abundant number, since it is smaller than the sum of its proper divisors (1888231380).

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

838260780 is a wasteful number, since it uses less digits than its factorization.

838260780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32799 (or 32797 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 838260780 is about 28952.7335497013. The cubic root of 838260780 is about 942.8871470840.

The spelling of 838260780 in words is "eight hundred thirty-eight million, two hundred sixty thousand, seven hundred eighty".