20763187428 has 24 divisors (see below), whose sum is σ = 48490609888. Its totient is φ = 6914894976.

The previous prime is 20763187427. The next prime is 20763187469. The reversal of 20763187428 is 82478136702.

It is a super-2 number, since 2×20763187428² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20763187427) 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, 756901 + ... + 783852.

Almost surely, 2^20763187428 is an apocalyptic number.

It is an amenable number.

20763187428 is an abundant number, since it is smaller than the sum of its proper divisors (27727422460).

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

20763187428 is a wasteful number, since it uses less digits than its factorization.

20763187428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541883 (or 1541881 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 20763187428 in words is "twenty billion, seven hundred sixty-three million, one hundred eighty-seven thousand, four hundred twenty-eight".