29320020 has 36 divisors (see below), whose sum is σ = 88937940. Its totient is φ = 7818624.

The previous prime is 29320007. The next prime is 29320091. The reversal of 29320020 is 2002392.

It can be written as a sum of positive squares in 2 ways, for example, as 9659664 + 19660356 = 3108^2 + 4434^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×29320020³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 29319975 and 29320002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81265 + ... + 81624.

Almost surely, 2^29320020 is an apocalyptic number.

29320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29320020 is an abundant number, since it is smaller than the sum of its proper divisors (59617920).

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

29320020 is a wasteful number, since it uses less digits than its factorization.

29320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162904 (or 162899 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 29320020 is about 5414.7963950642. The cubic root of 29320020 is about 308.3576690475.

The spelling of 29320020 in words is "twenty-nine million, three hundred twenty thousand, twenty".