1878004 has 6 divisors (see below), whose sum is σ = 3286514. Its totient is φ = 939000.

The previous prime is 1877983. The next prime is 1878013. The reversal of 1878004 is 4008781.

It can be written as a sum of positive squares in only one way, i.e., 1205604 + 672400 = 1098^2 + 820^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234747 + ... + 234754.

2^1878004 is an apocalyptic number.

It is an amenable number.

1878004 is a deficient number, since it is larger than the sum of its proper divisors (1408510).

1878004 is a wasteful number, since it uses less digits than its factorization.

1878004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469505 (or 469503 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 1878004 is about 1370.4028604757. The cubic root of 1878004 is about 123.3764219220.

The spelling of 1878004 in words is "one million, eight hundred seventy-eight thousand, four".