10021749 has 8 divisors (see below), whose sum is σ = 13500480. Its totient is φ = 6612096.

The previous prime is 10021747. The next prime is 10021769. The reversal of 10021749 is 94712001.

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

It is not a de Polignac number, because 10021749 - 2¹ = 10021747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021741) 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, 16929 + ... + 17510.

It is an arithmetic number, because the mean of its divisors is an integer number (1687560).

Almost surely, 2^10021749 is an apocalyptic number.

It is an amenable number.

10021749 is a deficient number, since it is larger than the sum of its proper divisors (3478731).

10021749 is an equidigital number, since it uses as much as digits as its factorization.

10021749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34539.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 10021749 is about 3165.7146112687. The cubic root of 10021749 is about 215.5995452413.

The spelling of 10021749 in words is "ten million, twenty-one thousand, seven hundred forty-nine".