32690385 has 80 divisors (see below), whose sum is σ = 72205056. Its totient is φ = 13779072.

The previous prime is 32690381. The next prime is 32690387. The reversal of 32690385 is 58309623.

It is not a de Polignac number, because 32690385 - 2² = 32690381 is a prime.

It is a super-2 number, since 2×32690385² = 2137322542896450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32690381) 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 79 ways as a sum of consecutive naturals, for example, 36412 + ... + 37298.

Almost surely, 2^32690385 is an apocalyptic number.

32690385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

32690385 is an abundant number, since it is smaller than the sum of its proper divisors (39514671).

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

32690385 is a wasteful number, since it uses less digits than its factorization.

32690385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 32690385 is about 5717.5506119317. The cubic root of 32690385 is about 319.7471472625.

The spelling of 32690385 in words is "thirty-two million, six hundred ninety thousand, three hundred eighty-five".