10209740 has 36 divisors (see below), whose sum is σ = 22241856. Its totient is φ = 3936576.

The previous prime is 10209739. The next prime is 10209799. The reversal of 10209740 is 4790201.

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, 16517 + ... + 17123.

Almost surely, 2^10209740 is an apocalyptic number.

10209740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10209740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11120928).

10209740 is an abundant number, since it is smaller than the sum of its proper divisors (12032116).

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

10209740 is a wasteful number, since it uses less digits than its factorization.

10209740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 10209740 is about 3195.2683768347. The cubic root of 10209740 is about 216.9392965190.

Adding to 10209740 its reverse (4790201), we get a palindrome (14999941).

The spelling of 10209740 in words is "ten million, two hundred nine thousand, seven hundred forty".