20136007 has 4 divisors (see below), whose sum is σ = 21320496. Its totient is φ = 18951520.

The previous prime is 20135993. The next prime is 20136031. The reversal of 20136007 is 70063102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70063102 = 2 ⋅35031551.

It is a cyclic number.

It is not a de Polignac number, because 20136007 - 2¹¹ = 20133959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592219 + ... + 592252.

It is an arithmetic number, because the mean of its divisors is an integer number (5330124).

Almost surely, 2^20136007 is an apocalyptic number.

20136007 is a deficient number, since it is larger than the sum of its proper divisors (1184489).

20136007 is a wasteful number, since it uses less digits than its factorization.

20136007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184488.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 20136007 is about 4487.3162357917. The cubic root of 20136007 is about 272.0556718153.

Adding to 20136007 its reverse (70063102), we get a palindrome (90199109).

The spelling of 20136007 in words is "twenty million, one hundred thirty-six thousand, seven".