269438820 has 48 divisors (see below), whose sum is σ = 862205568. Its totient is φ = 61585920.

The previous prime is 269438777. The next prime is 269438821. The reversal of 269438820 is 28834962.

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

It is not an unprimeable number, because it can be changed into a prime (269438821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320341 + ... + 321180.

It is an arithmetic number, because the mean of its divisors is an integer number (17962616).

Almost surely, 2^269438820 is an apocalyptic number.

269438820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

269438820 is an abundant number, since it is smaller than the sum of its proper divisors (592766748).

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

269438820 is a wasteful number, since it uses less digits than its factorization.

269438820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641540 (or 641538 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 269438820 is about 16414.5916793565. The cubic root of 269438820 is about 645.8823091359.

It can be divided in two parts, 2694 and 38820, that added together give a palindrome (41514).

The spelling of 269438820 in words is "two hundred sixty-nine million, four hundred thirty-eight thousand, eight hundred twenty".