10020078 has 16 divisors (see below), whose sum is σ = 22266960. Its totient is φ = 3340008.

The previous prime is 10020067. The next prime is 10020079. The reversal of 10020078 is 87002001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 10020078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020079) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 92725 + ... + 92832.

It is an arithmetic number, because the mean of its divisors is an integer number (1391685).

Almost surely, 2^10020078 is an apocalyptic number.

10020078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10020078 is an abundant number, since it is smaller than the sum of its proper divisors (12246882).

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

10020078 is a wasteful number, since it uses less digits than its factorization.

10020078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185568 (or 185562 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 10020078 is about 3165.4506788134. The cubic root of 10020078 is about 215.5875617421.

Adding to 10020078 its reverse (87002001), we get a palindrome (97022079).

The spelling of 10020078 in words is "ten million, twenty thousand, seventy-eight".