32497470720 has 432 divisors, whose sum is σ = 132101528832. Its totient is φ = 7271792640.

The previous prime is 32497470647. The next prime is 32497470721. The reversal of 32497470720 is 2707479423.

32497470720 is a `hidden beast` number, since 3 + 24 + 97 + 470 + 72 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32497470721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1637497 + ... + 1657223.

It is an arithmetic number, because the mean of its divisors is an integer number (305790576).

Almost surely, 2^32497470720 is an apocalyptic number.

32497470720 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 32497470720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66050764416).

32497470720 is an abundant number, since it is smaller than the sum of its proper divisors (99604058112).

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

32497470720 is a wasteful number, since it uses less digits than its factorization.

32497470720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19778 (or 19761 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 32497470720 in words is "thirty-two billion, four hundred ninety-seven million, four hundred seventy thousand, seven hundred twenty".