338821854 has 48 divisors (see below), whose sum is σ = 793060992. Its totient is φ = 94533264.

The previous prime is 338821841. The next prime is 338821859. The reversal of 338821854 is 458128833.

It is a super-2 number, since 2×338821854² = 229600497495994632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338821859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75477 + ... + 79839.

It is an arithmetic number, because the mean of its divisors is an integer number (16522104).

Almost surely, 2^338821854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 338821854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396530496).

338821854 is an abundant number, since it is smaller than the sum of its proper divisors (454239138).

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

338821854 is a wasteful number, since it uses less digits than its factorization.

338821854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461 (or 4418 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 338821854 is about 18407.1142224956. The cubic root of 338821854 is about 697.1461043067.

The spelling of 338821854 in words is "three hundred thirty-eight million, eight hundred twenty-one thousand, eight hundred fifty-four".