20070545 has 8 divisors (see below), whose sum is σ = 26274240. Its totient is φ = 14596720.

The previous prime is 20070529. The next prime is 20070553. The reversal of 20070545 is 54507002.

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

It is not a de Polignac number, because 20070545 - 2⁴ = 20070529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20070545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182405 + ... + 182514.

It is an arithmetic number, because the mean of its divisors is an integer number (3284280).

Almost surely, 2^20070545 is an apocalyptic number.

It is an amenable number.

20070545 is a deficient number, since it is larger than the sum of its proper divisors (6203695).

20070545 is a wasteful number, since it uses less digits than its factorization.

20070545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364935.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20070545 is about 4480.0161830065. The cubic root of 20070545 is about 271.7605348065.

Adding to 20070545 its reverse (54507002), we get a palindrome (74577547).

The spelling of 20070545 in words is "twenty million, seventy thousand, five hundred forty-five".