10729440 has 72 divisors (see below), whose sum is σ = 36619128. Its totient is φ = 2860800.

The previous prime is 10729421. The next prime is 10729457. The reversal of 10729440 is 4492701.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2286 + ... + 5165.

It is an arithmetic number, because the mean of its divisors is an integer number (508599).

Almost surely, 2^10729440 is an apocalyptic number.

10729440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10729440 is an abundant number, since it is smaller than the sum of its proper divisors (25889688).

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

10729440 is a wasteful number, since it uses less digits than its factorization.

10729440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472 (or 7461 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 10729440 is about 3275.5823909650. The cubic root of 10729440 is about 220.5594576419.

The spelling of 10729440 in words is "ten million, seven hundred twenty-nine thousand, four hundred forty".