8261406 has 16 divisors (see below), whose sum is σ = 18358800. Its totient is φ = 2753784.

The previous prime is 8261399. The next prime is 8261411. The reversal of 8261406 is 6041628.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 8261406.

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, 76441 + ... + 76548.

It is an arithmetic number, because the mean of its divisors is an integer number (1147425).

Almost surely, 2^8261406 is an apocalyptic number.

8261406 is an abundant number, since it is smaller than the sum of its proper divisors (10097394).

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

8261406 is a wasteful number, since it uses less digits than its factorization.

8261406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153000 (or 152994 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8261406 is about 2874.2661672156. The cubic root of 8261406 is about 202.1550781169.

The spelling of 8261406 in words is "eight million, two hundred sixty-one thousand, four hundred six".