20729048 has 8 divisors (see below), whose sum is σ = 38866980. Its totient is φ = 10364520.

The previous prime is 20729041. The next prime is 20729077. The reversal of 20729048 is 84092702.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20729041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295558 + ... + 1295573.

Almost surely, 2^20729048 is an apocalyptic number.

It is an amenable number.

20729048 is a deficient number, since it is larger than the sum of its proper divisors (18137932).

20729048 is a wasteful number, since it uses less digits than its factorization.

20729048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2591137 (or 2591133 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 20729048 is about 4552.9164279613. The cubic root of 20729048 is about 274.7007124145.

The spelling of 20729048 in words is "twenty million, seven hundred twenty-nine thousand, forty-eight".