20432102240 has 96 divisors (see below), whose sum is σ = 52799765760. Its totient is φ = 7410009600.

The previous prime is 20432102189. The next prime is 20432102269. The reversal of 20432102240 is 4220123402.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 651725 + ... + 682355.

It is an arithmetic number, because the mean of its divisors is an integer number (549997560).

Almost surely, 2^20432102240 is an apocalyptic number.

20432102240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20432102240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26399882880).

20432102240 is an abundant number, since it is smaller than the sum of its proper divisors (32367663520).

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

20432102240 is a wasteful number, since it uses less digits than its factorization.

20432102240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31036 (or 31028 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20432102240 its reverse (4220123402), we get a palindrome (24652225642).

The spelling of 20432102240 in words is "twenty billion, four hundred thirty-two million, one hundred two thousand, two hundred forty".