10349721 has 32 divisors (see below), whose sum is σ = 15984000. Its totient is φ = 6614784.

The previous prime is 10349707. The next prime is 10349743. The reversal of 10349721 is 12794301.

It is not a de Polignac number, because 10349721 - 2⁶ = 10349657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10349771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116245 + ... + 116333.

It is an arithmetic number, because the mean of its divisors is an integer number (499500).

Almost surely, 2^10349721 is an apocalyptic number.

It is an amenable number.

10349721 is a deficient number, since it is larger than the sum of its proper divisors (5634279).

10349721 is an equidigital number, since it uses as much as digits as its factorization.

10349721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 10349721 is about 3217.0982266633. The cubic root of 10349721 is about 217.9262509002.

The spelling of 10349721 in words is "ten million, three hundred forty-nine thousand, seven hundred twenty-one".