10244640 has 96 divisors (see below), whose sum is σ = 36892800. Its totient is φ = 2340864.

The previous prime is 10244623. The next prime is 10244653. The reversal of 10244640 is 4644201.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1836 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (384300).

Almost surely, 2^10244640 is an apocalyptic number.

10244640 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 10244640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18446400).

10244640 is an abundant number, since it is smaller than the sum of its proper divisors (26648160).

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

10244640 is a wasteful number, since it uses less digits than its factorization.

10244640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3074 (or 3066 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 10244640 is about 3200.7249178897. The cubic root of 10244640 is about 217.1862035877.

Adding to 10244640 its reverse (4644201), we get a palindrome (14888841).

It can be divided in two parts, 10 and 244640, that added together give a triangular number (244650 = T₆₉₉).

The spelling of 10244640 in words is "ten million, two hundred forty-four thousand, six hundred forty".