10721478 has 8 divisors (see below), whose sum is σ = 21442968. Its totient is φ = 3573824.

The previous prime is 10721471. The next prime is 10721479. The reversal of 10721478 is 87412701.

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

10721478 is an admirable number.

It is a super-2 number, since 2×10721478² = 229900181008968, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10721471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893451 + ... + 893462.

It is an arithmetic number, because the mean of its divisors is an integer number (2680371).

Almost surely, 2^10721478 is an apocalyptic number.

10721478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10721478 is a wasteful number, since it uses less digits than its factorization.

10721478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786918.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 10721478 is about 3274.3668090182. The cubic root of 10721478 is about 220.5048872586.

The spelling of 10721478 in words is "ten million, seven hundred twenty-one thousand, four hundred seventy-eight".