86747490 has 128 divisors (see below), whose sum is σ = 246412800. Its totient is φ = 21669120.

The previous prime is 86747489. The next prime is 86747509. The reversal of 86747490 is 9474768.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 378696 + ... + 378924.

It is an arithmetic number, because the mean of its divisors is an integer number (1925100).

Almost surely, 2^86747490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86747490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123206400).

86747490 is an abundant number, since it is smaller than the sum of its proper divisors (159665310).

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

86747490 is a wasteful number, since it uses less digits than its factorization.

86747490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 86747490 is about 9313.8332602640. The cubic root of 86747490 is about 442.6756556285.

The spelling of 86747490 in words is "eighty-six million, seven hundred forty-seven thousand, four hundred ninety".