10721070 has 48 divisors (see below), whose sum is σ = 28108080. Its totient is φ = 2835072.

The previous prime is 10721057. The next prime is 10721077. The reversal of 10721070 is 7012701.

It is a super-2 number, since 2×10721070² = 229882683889800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10721077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12082 + ... + 12938.

It is an arithmetic number, because the mean of its divisors is an integer number (585585).

Almost surely, 2^10721070 is an apocalyptic number.

10721070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10721070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14054040).

10721070 is an abundant number, since it is smaller than the sum of its proper divisors (17387010).

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

10721070 is a wasteful number, since it uses less digits than its factorization.

10721070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 10721070 is about 3274.3045063036. The cubic root of 10721070 is about 220.5020901587.

Adding to 10721070 its reverse (7012701), we get a palindrome (17733771).

The spelling of 10721070 in words is "ten million, seven hundred twenty-one thousand, seventy".