20045918928 has 40 divisors (see below), whose sum is σ = 59183190208. Its totient is φ = 5727405312.

The previous prime is 20045918927. The next prime is 20045918947. The reversal of 20045918928 is 82981954002.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045918927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29829901 + ... + 29830572.

Almost surely, 2^20045918928 is an apocalyptic number.

20045918928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20045918928 is an abundant number, since it is smaller than the sum of its proper divisors (39137271280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20045918928 is a wasteful number, since it uses less digits than its factorization.

20045918928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59660491 (or 59660485 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The spelling of 20045918928 in words is "twenty billion, forty-five million, nine hundred eighteen thousand, nine hundred twenty-eight".