20287622772 has 48 divisors (see below), whose sum is σ = 52614408000. Its totient is φ = 6760372320.

The previous prime is 20287622743. The next prime is 20287622791. The reversal of 20287622772 is 27722678202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327822 + ... + 384762.

It is an arithmetic number, because the mean of its divisors is an integer number (1096133500).

Almost surely, 2^20287622772 is an apocalyptic number.

It is an amenable number.

20287622772 is an abundant number, since it is smaller than the sum of its proper divisors (32326785228).

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

20287622772 is a wasteful number, since it uses less digits than its factorization.

20287622772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60253 (or 60245 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 20287622772 in words is "twenty billion, two hundred eighty-seven million, six hundred twenty-two thousand, seven hundred seventy-two".