87406280 has 32 divisors (see below), whose sum is σ = 211793400. Its totient is φ = 32272896.

The previous prime is 87406271. The next prime is 87406283. The reversal of 87406280 is 8260478.

It can be written as a sum of positive squares in 4 ways, for example, as 29311396 + 58094884 = 5414^2 + 7622^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87406280.

It is not an unprimeable number, because it can be changed into a prime (87406283) 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, 83525 + ... + 84564.

Almost surely, 2^87406280 is an apocalyptic number.

It is an amenable number.

87406280 is an abundant number, since it is smaller than the sum of its proper divisors (124387120).

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

87406280 is a wasteful number, since it uses less digits than its factorization.

87406280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168113 (or 168109 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 87406280 is about 9349.1325800846. The cubic root of 87406280 is about 443.7934406987.

The spelling of 87406280 in words is "eighty-seven million, four hundred six thousand, two hundred eighty".