10200078 has 24 divisors (see below), whose sum is σ = 25257648. Its totient is φ = 2914272.

The previous prime is 10200077. The next prime is 10200079. The reversal of 10200078 is 87000201.

It is an interprime number because it is at equal distance from previous prime (10200077) and next prime (10200079).

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 10200078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200077) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 40351 + ... + 40602.

It is an arithmetic number, because the mean of its divisors is an integer number (1052402).

Almost surely, 2^10200078 is an apocalyptic number.

10200078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10200078 is an abundant number, since it is smaller than the sum of its proper divisors (15057570).

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

10200078 is a wasteful number, since it uses less digits than its factorization.

10200078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80968 (or 80965 counting only the distinct ones).

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

The square root of 10200078 is about 3193.7560958846. The cubic root of 10200078 is about 216.8708413302.

Adding to 10200078 its reverse (87000201), we get a palindrome (97200279).

The spelling of 10200078 in words is "ten million, two hundred thousand, seventy-eight".