39645330 has 32 divisors (see below), whose sum is σ = 99287424. Its totient is φ = 10112256.

The previous prime is 39645329. The next prime is 39645337. The reversal of 39645330 is 3354693.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39645291 and 39645300.

It is not an unprimeable number, because it can be changed into a prime (39645337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28039 + ... + 29418.

It is an arithmetic number, because the mean of its divisors is an integer number (3102732).

Almost surely, 2^39645330 is an apocalyptic number.

39645330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39645330 is an abundant number, since it is smaller than the sum of its proper divisors (59642094).

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

39645330 is a wasteful number, since it uses less digits than its factorization.

39645330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57490.

The product of its (nonzero) digits is 29160, while the sum is 33.

The square root of 39645330 is about 6296.4537638261. The cubic root of 39645330 is about 340.9813917601.

The spelling of 39645330 in words is "thirty-nine million, six hundred forty-five thousand, three hundred thirty".