1806402 has 16 divisors (see below), whose sum is σ = 3890880. Its totient is φ = 555792.

The previous prime is 1806383. The next prime is 1806407. The reversal of 1806402 is 2046081.

1806402 is an esthetic number in base 7, because in such base its adjacent digits differ by 1.

It is not an unprimeable number, because it can be changed into a prime (1806407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11502 + ... + 11657.

It is an arithmetic number, because the mean of its divisors is an integer number (243180).

2^1806402 is an apocalyptic number.

1806402 is an abundant number, since it is smaller than the sum of its proper divisors (2084478).

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

1806402 is a wasteful number, since it uses less digits than its factorization.

1806402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23177.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1806402 is about 1344.0245533471. The cubic root of 1806402 is about 121.7880850400.

The spelling of 1806402 in words is "one million, eight hundred six thousand, four hundred two".