1902402 has 24 divisors (see below), whose sum is σ = 4365036. Its totient is φ = 596736.

The previous prime is 1902391. The next prime is 1902403. The reversal of 1902402 is 2042091.

It can be written as a sum of positive squares in 2 ways, for example, as 1766241 + 136161 = 1329^2 + 369^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1902403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2803 + ... + 3414.

2^1902402 is an apocalyptic number.

1902402 is an abundant number, since it is smaller than the sum of its proper divisors (2462634).

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

1902402 is a wasteful number, since it uses less digits than its factorization.

1902402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6242 (or 6239 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1902402 is about 1379.2758969836. The cubic root of 1902402 is about 123.9084044351.

Adding to 1902402 its reverse (2042091), we get a palindrome (3944493).

It can be divided in two parts, 1902 and 402, that added together give a square (2304 = 48²).

The spelling of 1902402 in words is "one million, nine hundred two thousand, four hundred two".