20147006 has 32 divisors (see below), whose sum is σ = 35313408. Its totient is φ = 8519040.

The previous prime is 20146991. The next prime is 20147021. The reversal of 20147006 is 60074102.

It is an interprime number because it is at equal distance from previous prime (20146991) and next prime (20147021).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38261 + ... + 38783.

It is an arithmetic number, because the mean of its divisors is an integer number (1103544).

Almost surely, 2^20147006 is an apocalyptic number.

20147006 is a deficient number, since it is larger than the sum of its proper divisors (15166402).

20147006 is a wasteful number, since it uses less digits than its factorization.

20147006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20147006 is about 4488.5416339831. The cubic root of 20147006 is about 272.1051982790.

The spelling of 20147006 in words is "twenty million, one hundred forty-seven thousand, six".