801278156 has 24 divisors (see below), whose sum is σ = 1605188256. Its totient is φ = 342840960.

The previous prime is 801278143. The next prime is 801278243. The reversal of 801278156 is 651872108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5915 + ... + 40466.

It is an arithmetic number, because the mean of its divisors is an integer number (66882844).

Almost surely, 2^801278156 is an apocalyptic number.

It is an amenable number.

801278156 is an abundant number, since it is smaller than the sum of its proper divisors (803910100).

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

801278156 is a wasteful number, since it uses less digits than its factorization.

801278156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47009 (or 47007 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 801278156 is about 28306.8570491321. The cubic root of 801278156 is about 928.8118932129.

It can be divided in two parts, 8012 and 78156, that added together give a palindrome (86168).

The spelling of 801278156 in words is "eight hundred one million, two hundred seventy-eight thousand, one hundred fifty-six".