20130078 has 8 divisors (see below), whose sum is σ = 40260168. Its totient is φ = 6710024.

The previous prime is 20130043. The next prime is 20130079. The reversal of 20130078 is 87003102.

It is a sphenic number, since it is the product of 3 distinct primes.

20130078 is an admirable number.

It is a super-3 number, since 3×20130078³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677501 + ... + 1677512.

It is an arithmetic number, because the mean of its divisors is an integer number (5032521).

Almost surely, 2^20130078 is an apocalyptic number.

20130078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20130078 is a wasteful number, since it uses less digits than its factorization.

20130078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355018.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20130078 is about 4486.6555472869. The cubic root of 20130078 is about 272.0289671428.

The spelling of 20130078 in words is "twenty million, one hundred thirty thousand, seventy-eight".