80220729 has 8 divisors (see below), whose sum is σ = 107125920. Its totient is φ = 53398016.

The previous prime is 80220727. The next prime is 80220743. The reversal of 80220729 is 92702208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80220729 - 2¹ = 80220727 is a prime.

It is a super-3 number, since 3×80220729³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 80220696 and 80220705.

It is not an unprimeable number, because it can be changed into a prime (80220727) 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, 18312 + ... + 22265.

It is an arithmetic number, because the mean of its divisors is an integer number (13390740).

Almost surely, 2^80220729 is an apocalyptic number.

It is an amenable number.

80220729 is a deficient number, since it is larger than the sum of its proper divisors (26905191).

80220729 is a wasteful number, since it uses less digits than its factorization.

80220729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41239.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 80220729 is about 8956.6025366765. The cubic root of 80220729 is about 431.2828626081.

The spelling of 80220729 in words is "eighty million, two hundred twenty thousand, seven hundred twenty-nine".