20154323460 has 48 divisors (see below), whose sum is σ = 56438992512. Its totient is φ = 5373830400.

The previous prime is 20154323447. The next prime is 20154323509. The reversal of 20154323460 is 6432345102.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 664425 + ... + 694095.

It is an arithmetic number, because the mean of its divisors is an integer number (1175812344).

Almost surely, 2^20154323460 is an apocalyptic number.

20154323460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20154323460 is an abundant number, since it is smaller than the sum of its proper divisors (36284669052).

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

20154323460 is a wasteful number, since it uses less digits than its factorization.

20154323460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41004 (or 41002 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 20154323460 its reverse (6432345102), we get a palindrome (26586668562).

The spelling of 20154323460 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-three thousand, four hundred sixty".