20329078 has 32 divisors (see below), whose sum is σ = 38423808. Its totient is φ = 7836000.

The previous prime is 20329061. The next prime is 20329103. The reversal of 20329078 is 87092302.

It is a congruent number.

It is an unprimeable number.

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, 14901 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (1200744).

Almost surely, 2^20329078 is an apocalyptic number.

20329078 is a deficient number, since it is larger than the sum of its proper divisors (18094730).

20329078 is a wasteful number, since it uses less digits than its factorization.

20329078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20329078 is about 4508.7778831963. Note that the first 3 decimals coincide. The cubic root of 20329078 is about 272.9224287293.

The spelling of 20329078 in words is "twenty million, three hundred twenty-nine thousand, seventy-eight".