10073721 has 8 divisors (see below), whose sum is σ = 15350464. Its totient is φ = 5756400.

The previous prime is 10073717. The next prime is 10073737. The reversal of 10073721 is 12737001.

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

It is not a de Polignac number, because 10073721 - 2² = 10073717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 479701 = 10073721 / (1 + 0 + 0 + 7 + 3 + 7 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10073711) 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, 239830 + ... + 239871.

It is an arithmetic number, because the mean of its divisors is an integer number (1918808).

Almost surely, 2^10073721 is an apocalyptic number.

It is an amenable number.

10073721 is a deficient number, since it is larger than the sum of its proper divisors (5276743).

10073721 is an equidigital number, since it uses as much as digits as its factorization.

10073721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479711.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 10073721 is about 3173.9125696843. The cubic root of 10073721 is about 215.9715969169.

The spelling of 10073721 in words is "ten million, seventy-three thousand, seven hundred twenty-one".