10020729 has 8 divisors (see below), whose sum is σ = 13645440. Its totient is φ = 6538256.

The previous prime is 10020713. The next prime is 10020739. The reversal of 10020729 is 92702001.

It is a happy number.

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 10020729 - 2⁴ = 10020713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10020739) 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, 35394 + ... + 35675.

It is an arithmetic number, because the mean of its divisors is an integer number (1705680).

Almost surely, 2^10020729 is an apocalyptic number.

It is an amenable number.

10020729 is a deficient number, since it is larger than the sum of its proper divisors (3624711).

10020729 is an equidigital number, since it uses as much as digits as its factorization.

10020729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71119.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 10020729 is about 3165.5535061028. The cubic root of 10020729 is about 215.5922305169.

The spelling of 10020729 in words is "ten million, twenty thousand, seven hundred twenty-nine".