20155006 has 8 divisors (see below), whose sum is σ = 30340944. Its totient is φ = 10041360.

The previous prime is 20154961. The next prime is 20155021. The reversal of 20155006 is 60055102.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17370 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (3792618).

Almost surely, 2^20155006 is an apocalyptic number.

20155006 is a deficient number, since it is larger than the sum of its proper divisors (10185938).

20155006 is a wasteful number, since it uses less digits than its factorization.

20155006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36146.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 20155006 is about 4489.4327035829. The cubic root of 20155006 is about 272.1412094779.

It can be divided in two parts, 2015 and 5006, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 20155006 in words is "twenty million, one hundred fifty-five thousand, six".