20283247480 has 16 divisors (see below), whose sum is σ = 45637306920. Its totient is φ = 8113298976.

The previous prime is 20283247409. The next prime is 20283247493. The reversal of 20283247480 is 8474238202.

It is a happy number.

It is a super-2 number, since 2×20283247480² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 507081187 = 20283247480 / (2 + 0 + 2 + 8 + 3 + 2 + 4 + 7 + 4 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253540554 + ... + 253540633.

Almost surely, 2^20283247480 is an apocalyptic number.

20283247480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20283247480 is an abundant number, since it is smaller than the sum of its proper divisors (25354059440).

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

20283247480 is a wasteful number, since it uses less digits than its factorization.

20283247480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507081198 (or 507081194 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The spelling of 20283247480 in words is "twenty billion, two hundred eighty-three million, two hundred forty-seven thousand, four hundred eighty".