90010102 has 16 divisors (see below), whose sum is σ = 166172832. Its totient is φ = 35608320.

The previous prime is 90010091. The next prime is 90010103. The reversal of 90010102 is 20101009.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247099 + ... + 247462.

It is an arithmetic number, because the mean of its divisors is an integer number (10385802).

Almost surely, 2^90010102 is an apocalyptic number.

90010102 is a deficient number, since it is larger than the sum of its proper divisors (76162730).

90010102 is a wasteful number, since it uses less digits than its factorization.

90010102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494583.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 90010102 is about 9487.3653877143. The cubic root of 90010102 is about 448.1572411213.

The spelling of 90010102 in words is "ninety million, ten thousand, one hundred two".