86471772 has 24 divisors (see below), whose sum is σ = 208276992. Its totient is φ = 27894000.

The previous prime is 86471731. The next prime is 86471773. The reversal of 86471772 is 27717468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86471773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115854 + ... + 116597.

It is an arithmetic number, because the mean of its divisors is an integer number (8678208).

Almost surely, 2^86471772 is an apocalyptic number.

It is an amenable number.

86471772 is an abundant number, since it is smaller than the sum of its proper divisors (121805220).

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

86471772 is a wasteful number, since it uses less digits than its factorization.

86471772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232489 (or 232487 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 86471772 is about 9299.0199483601. The cubic root of 86471772 is about 442.2061581367.

The spelling of 86471772 in words is "eighty-six million, four hundred seventy-one thousand, seven hundred seventy-two".