20738045 has 32 divisors (see below), whose sum is σ = 27993600. Its totient is φ = 14672896.

The previous prime is 20738033. The next prime is 20738051. The reversal of 20738045 is 54083702.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20738045 - 2²² = 16543741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20737999 and 20738017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115766 + ... + 115944.

It is an arithmetic number, because the mean of its divisors is an integer number (874800).

Almost surely, 2^20738045 is an apocalyptic number.

It is an amenable number.

20738045 is a deficient number, since it is larger than the sum of its proper divisors (7255555).

20738045 is a wasteful number, since it uses less digits than its factorization.

20738045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20738045 is about 4553.9043687807. The cubic root of 20738045 is about 274.7404493227.

The spelling of 20738045 in words is "twenty million, seven hundred thirty-eight thousand, forty-five".