32020453440 has 280 divisors, whose sum is σ = 114153083352. Its totient is φ = 8520007680.

The previous prime is 32020453427. The next prime is 32020453441. The reversal of 32020453440 is 4435402023.

32020453440 is a `hidden beast` number, since 3 + 202 + 0 + 453 + 4 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21404860416 + 10615593024 = 146304^2 + 103032^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (32020453441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14954770 + ... + 14956910.

Almost surely, 2^32020453440 is an apocalyptic number.

32020453440 is a gapful number since it is divisible by the number (30) 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 32020453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57076541676).

32020453440 is an abundant number, since it is smaller than the sum of its proper divisors (82132629912).

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

32020453440 is a wasteful number, since it uses less digits than its factorization.

32020453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 32020453440 its reverse (4435402023), we get a palindrome (36455855463).

The spelling of 32020453440 in words is "thirty-two billion, twenty million, four hundred fifty-three thousand, four hundred forty".