86247890 has 16 divisors (see below), whose sum is σ = 160254720. Its totient is φ = 33386160.

The previous prime is 86247877. The next prime is 86247899. The reversal of 86247890 is 9874268.

It is not an unprimeable number, because it can be changed into a prime (86247899) 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, 138800 + ... + 139419.

It is an arithmetic number, because the mean of its divisors is an integer number (10015920).

Almost surely, 2^86247890 is an apocalyptic number.

86247890 is a deficient number, since it is larger than the sum of its proper divisors (74006830).

86247890 is a wasteful number, since it uses less digits than its factorization.

86247890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278257.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 86247890 is about 9286.9742112272. The cubic root of 86247890 is about 441.8241931665.

The spelling of 86247890 in words is "eighty-six million, two hundred forty-seven thousand, eight hundred ninety".