20073507 has 4 divisors (see below), whose sum is σ = 26764680. Its totient is φ = 13382336.

The previous prime is 20073463. The next prime is 20073509. The reversal of 20073507 is 70537002.

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

It is a cyclic number.

It is not a de Polignac number, because 20073507 - 2¹⁰ = 20072483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20073509) 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, 3345582 + ... + 3345587.

It is an arithmetic number, because the mean of its divisors is an integer number (6691170).

Almost surely, 2^20073507 is an apocalyptic number.

20073507 is a deficient number, since it is larger than the sum of its proper divisors (6691173).

20073507 is an equidigital number, since it uses as much as digits as its factorization.

20073507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6691172.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 20073507 is about 4480.3467499737. The cubic root of 20073507 is about 271.7739029057.

The spelling of 20073507 in words is "twenty million, seventy-three thousand, five hundred seven".