86490420 has 48 divisors (see below), whose sum is σ = 242850048. Its totient is φ = 22999680.

The previous prime is 86490409. The next prime is 86490431. The reversal of 86490420 is 2409468.

It is an interprime number because it is at equal distance from previous prime (86490409) and next prime (86490431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22005 + ... + 25635.

It is an arithmetic number, because the mean of its divisors is an integer number (5059376).

Almost surely, 2^86490420 is an apocalyptic number.

It is an amenable number.

86490420 is an abundant number, since it is smaller than the sum of its proper divisors (156359628).

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

86490420 is a wasteful number, since it uses less digits than its factorization.

86490420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040 (or 4038 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 86490420 is about 9300.0225806177. The cubic root of 86490420 is about 442.2379437223.

Adding to 86490420 its reverse (2409468), we get a palindrome (88899888).

The spelling of 86490420 in words is "eighty-six million, four hundred ninety thousand, four hundred twenty".