900002078 has 16 divisors (see below), whose sum is σ = 1362584160. Its totient is φ = 445825536.

The previous prime is 900002071. The next prime is 900002099. The reversal of 900002078 is 870200009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900002071) 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, 100238 + ... + 108846.

It is an arithmetic number, because the mean of its divisors is an integer number (85161510).

Almost surely, 2^900002078 is an apocalyptic number.

900002078 is a deficient number, since it is larger than the sum of its proper divisors (462582082).

900002078 is a wasteful number, since it uses less digits than its factorization.

900002078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 900002078 is about 30000.0346333133. The cubic root of 900002078 is about 965.4901276743.

The spelling of 900002078 in words is "nine hundred million, two thousand, seventy-eight".