20154020732 has 24 divisors (see below), whose sum is σ = 35403451776. Its totient is φ = 10038785328.

The previous prime is 20154020717. The next prime is 20154020749. The reversal of 20154020732 is 23702045102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267083 + ... + 3273245.

It is an arithmetic number, because the mean of its divisors is an integer number (1475143824).

Almost surely, 2^20154020732 is an apocalyptic number.

It is an amenable number.

20154020732 is a deficient number, since it is larger than the sum of its proper divisors (15249431044).

20154020732 is a wasteful number, since it uses less digits than its factorization.

20154020732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9137 (or 9135 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

Adding to 20154020732 its reverse (23702045102), we get a palindrome (43856065834).

The spelling of 20154020732 in words is "twenty billion, one hundred fifty-four million, twenty thousand, seven hundred thirty-two".