20729482 has 8 divisors (see below), whose sum is σ = 31415076. Its totient is φ = 10257792.

The previous prime is 20729479. The next prime is 20729503. The reversal of 20729482 is 28492702.

It can be written as a sum of positive squares in 2 ways, for example, as 18931201 + 1798281 = 4351^2 + 1341^2 .

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

It is a super-2 number, since 2×20729482² = 859422847976648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53233 + ... + 53620.

Almost surely, 2^20729482 is an apocalyptic number.

20729482 is a deficient number, since it is larger than the sum of its proper divisors (10685594).

20729482 is a wasteful number, since it uses less digits than its factorization.

20729482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106952.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20729482 is about 4552.9640894696. The cubic root of 20729482 is about 274.7026295194.

The spelling of 20729482 in words is "twenty million, seven hundred twenty-nine thousand, four hundred eighty-two".