32405297652 has 144 divisors (see below), whose sum is σ = 101950168320. Its totient is φ = 8450348544.

The previous prime is 32405297597. The next prime is 32405297657. The reversal of 32405297652 is 25679250423.

32405297652 is a `hidden beast` number, since 3 + 2 + 4 + 0 + 529 + 76 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 32405297598 and 32405297607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32405297657) 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, 235993 + ... + 347135.

It is an arithmetic number, because the mean of its divisors is an integer number (707987280).

Almost surely, 2^32405297652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32405297652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50975084160).

32405297652 is an abundant number, since it is smaller than the sum of its proper divisors (69544870668).

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

32405297652 is a wasteful number, since it uses less digits than its factorization.

32405297652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111262 (or 111257 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 32405297652 in words is "thirty-two billion, four hundred five million, two hundred ninety-seven thousand, six hundred fifty-two".