8261438 has 16 divisors (see below), whose sum is σ = 12870144. Its totient is φ = 3973080.

The previous prime is 8261419. The next prime is 8261441. The reversal of 8261438 is 8341628.

It is a super-3 number, since 3×8261438³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13781 + ... + 14367.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^8261438 is an apocalyptic number.

8261438 is a deficient number, since it is larger than the sum of its proper divisors (4608706).

8261438 is a wasteful number, since it uses less digits than its factorization.

8261438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its digits is 9216, while the sum is 32.

The square root of 8261438 is about 2874.2717338484. The cubic root of 8261438 is about 202.1553391279.

The spelling of 8261438 in words is "eight million, two hundred sixty-one thousand, four hundred thirty-eight".