9020138 has 8 divisors (see below), whose sum is σ = 13543140. Its totient is φ = 4505760.

The previous prime is 9020113. The next prime is 9020147. The reversal of 9020138 is 8310209.

It can be written as a sum of positive squares in 2 ways, for example, as 8922169 + 97969 = 2987^2 + 313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2318 + ... + 4838.

Almost surely, 2^9020138 is an apocalyptic number.

9020138 is a deficient number, since it is larger than the sum of its proper divisors (4523002).

9020138 is a wasteful number, since it uses less digits than its factorization.

9020138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 9020138 is about 3003.3544579353. The cubic root of 9020138 is about 208.1634101719.

The spelling of 9020138 in words is "nine million, twenty thousand, one hundred thirty-eight".