10721490 has 64 divisors (see below), whose sum is σ = 28498176. Its totient is φ = 2564352.

The previous prime is 10721489. The next prime is 10721549. The reversal of 10721490 is 9412701.

It is a super-2 number, since 2×10721490² = 229900695640200, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 10721490.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14059 + ... + 14801.

It is an arithmetic number, because the mean of its divisors is an integer number (445284).

Almost surely, 2^10721490 is an apocalyptic number.

10721490 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 10721490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14249088).

10721490 is an abundant number, since it is smaller than the sum of its proper divisors (17776686).

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

10721490 is a wasteful number, since it uses less digits than its factorization.

10721490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803.

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

The square root of 10721490 is about 3274.3686414330. The cubic root of 10721490 is about 220.5049695251.

It can be divided in two parts, 10721 and 490, that added together give a palindrome (11211).

The spelling of 10721490 in words is "ten million, seven hundred twenty-one thousand, four hundred ninety".