1902444 has 12 divisors (see below), whose sum is σ = 4439064. Its totient is φ = 634144.

The previous prime is 1902437. The next prime is 1902457. The reversal of 1902444 is 4442091.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79257 + ... + 79280.

It is an arithmetic number, because the mean of its divisors is an integer number (369922).

2^1902444 is an apocalyptic number.

It is an amenable number.

1902444 is an abundant number, since it is smaller than the sum of its proper divisors (2536620).

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

1902444 is a wasteful number, since it uses less digits than its factorization.

1902444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158544 (or 158542 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1902444 is about 1379.2911222798. The cubic root of 1902444 is about 123.9093162849.

It can be divided in two parts, 1902 and 444, that added together give a triangular number (2346 = T₆₈).

The spelling of 1902444 in words is "one million, nine hundred two thousand, four hundred forty-four".