20462389460 has 24 divisors (see below), whose sum is σ = 43781794056. Its totient is φ = 8030522240.

The previous prime is 20462389457. The next prime is 20462389471. The reversal of 20462389460 is 6498326402.

It can be written as a sum of positive squares in 4 ways, for example, as 10286422084 + 10175967376 = 101422^2 + 100876^2 .

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, 9651011 + ... + 9653130.

It is an arithmetic number, because the mean of its divisors is an integer number (1824241419).

Almost surely, 2^20462389460 is an apocalyptic number.

20462389460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20462389460 is an abundant number, since it is smaller than the sum of its proper divisors (23319404596).

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

20462389460 is a wasteful number, since it uses less digits than its factorization.

20462389460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19304203 (or 19304201 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 20462389460 in words is "twenty billion, four hundred sixty-two million, three hundred eighty-nine thousand, four hundred sixty".