20387352280 has 32 divisors (see below), whose sum is σ = 46556198640. Its totient is φ = 8033224320.

The previous prime is 20387352217. The next prime is 20387352299. The reversal of 20387352280 is 8225378302.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3800931 + ... + 3806290.

Almost surely, 2^20387352280 is an apocalyptic number.

20387352280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20387352280 is an abundant number, since it is smaller than the sum of its proper divisors (26168846360).

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

20387352280 is a wasteful number, since it uses less digits than its factorization.

20387352280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607299 (or 7607295 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 20387352280 in words is "twenty billion, three hundred eighty-seven million, three hundred fifty-two thousand, two hundred eighty".