87471270 has 24 divisors (see below), whose sum is σ = 227425536. Its totient is φ = 23325648.

The previous prime is 87471259. The next prime is 87471271. The reversal of 87471270 is 7217478.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87471271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485862 + ... + 486041.

It is an arithmetic number, because the mean of its divisors is an integer number (9476064).

Almost surely, 2^87471270 is an apocalyptic number.

87471270 is an abundant number, since it is smaller than the sum of its proper divisors (139954266).

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

87471270 is a wasteful number, since it uses less digits than its factorization.

87471270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971916 (or 971913 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 87471270 is about 9352.6076577605. The cubic root of 87471270 is about 443.9034060629.

The spelling of 87471270 in words is "eighty-seven million, four hundred seventy-one thousand, two hundred seventy".