1802040 has 32 divisors (see below), whose sum is σ = 5406480. Its totient is φ = 480512.

The previous prime is 1802039. The next prime is 1802057. The reversal of 1802040 is 402081.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 7389 + ... + 7628.

2^1802040 is an apocalyptic number.

1802040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1802040 is an abundant number, since it is smaller than the sum of its proper divisors (3604440).

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

1802040 is a wasteful number, since it uses less digits than its factorization.

1802040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15031 (or 15027 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1802040 is about 1342.4008343263. The cubic root of 1802040 is about 121.6899769769.

The spelling of 1802040 in words is "one million, eight hundred two thousand, forty".