329029638 has 16 divisors (see below), whose sum is σ = 752067840. Its totient is φ = 94008456.

The previous prime is 329029637. The next prime is 329029643. The reversal of 329029638 is 836920923.

It is a super-2 number, since 2×329029638² = 216521005364822088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 7834039 = 329029638 / (3 + 2 + 9 + 0 + 2 + 9 + 6 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 329029638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329029637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3916978 + ... + 3917061.

It is an arithmetic number, because the mean of its divisors is an integer number (47004240).

Almost surely, 2^329029638 is an apocalyptic number.

329029638 is an abundant number, since it is smaller than the sum of its proper divisors (423038202).

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

329029638 is a wasteful number, since it uses less digits than its factorization.

329029638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834051.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 329029638 is about 18139.1741267347. The cubic root of 329029638 is about 690.3643234595.

The spelling of 329029638 in words is "three hundred twenty-nine million, twenty-nine thousand, six hundred thirty-eight".