871978026 has 32 divisors (see below), whose sum is σ = 1755483840. Its totient is φ = 288745344.

The previous prime is 871978007. The next prime is 871978057. The reversal of 871978026 is 620879178.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843606 + ... + 844638.

It is an arithmetic number, because the mean of its divisors is an integer number (54858870).

Almost surely, 2^871978026 is an apocalyptic number.

871978026 is an abundant number, since it is smaller than the sum of its proper divisors (883505814).

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

871978026 is a wasteful number, since it uses less digits than its factorization.

871978026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 871978026 is about 29529.2740513545. The cubic root of 871978026 is about 955.3632111673.

The spelling of 871978026 in words is "eight hundred seventy-one million, nine hundred seventy-eight thousand, twenty-six".