32457540 has 48 divisors (see below), whose sum is σ = 91264320. Its totient is φ = 8618880.

The previous prime is 32457521. The next prime is 32457541. The reversal of 32457540 is 4575423.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 32457498 and 32457507.

It is not an unprimeable number, because it can be changed into a prime (32457541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15135 + ... + 17145.

It is an arithmetic number, because the mean of its divisors is an integer number (1901340).

Almost surely, 2^32457540 is an apocalyptic number.

32457540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32457540 is an abundant number, since it is smaller than the sum of its proper divisors (58806780).

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

32457540 is a wasteful number, since it uses less digits than its factorization.

32457540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292 (or 2290 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 32457540 is about 5697.1519200386. The cubic root of 32457540 is about 318.9861794375.

The spelling of 32457540 in words is "thirty-two million, four hundred fifty-seven thousand, five hundred forty".