20101238 has 4 divisors (see below), whose sum is σ = 30151860. Its totient is φ = 10050618.

The previous prime is 20101229. The next prime is 20101247. The reversal of 20101238 is 83210102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20101229) and next prime (20101247).

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 as a sum of consecutive naturals, namely, 5025308 + ... + 5025311.

It is an arithmetic number, because the mean of its divisors is an integer number (7537965).

Almost surely, 2^20101238 is an apocalyptic number.

20101238 is a deficient number, since it is larger than the sum of its proper divisors (10050622).

20101238 is a wasteful number, since it uses less digits than its factorization.

20101238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050621.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 20101238 is about 4483.4404200346. The cubic root of 20101238 is about 271.8989947202.

The spelling of 20101238 in words is "twenty million, one hundred one thousand, two hundred thirty-eight".