90146868 has 72 divisors (see below), whose sum is σ = 257594400. Its totient is φ = 24397632.

The previous prime is 90146863. The next prime is 90146873. The reversal of 90146868 is 86864109.

It is an interprime number because it is at equal distance from previous prime (90146863) and next prime (90146873).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90146863) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7138 + ... + 15206.

It is an arithmetic number, because the mean of its divisors is an integer number (3577700).

Almost surely, 2^90146868 is an apocalyptic number.

90146868 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90146868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128797200).

90146868 is an abundant number, since it is smaller than the sum of its proper divisors (167447532).

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

90146868 is a wasteful number, since it uses less digits than its factorization.

90146868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109 (or 8100 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 90146868 is about 9494.5704484195. The cubic root of 90146868 is about 448.3841106774.

The spelling of 90146868 in words is "ninety million, one hundred forty-six thousand, eight hundred sixty-eight".