10205040 has 80 divisors (see below), whose sum is σ = 32024736. Its totient is φ = 2688000.

The previous prime is 10205017. The next prime is 10205051. The reversal of 10205040 is 4050201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 24030 + ... + 24450.

Almost surely, 2^10205040 is an apocalyptic number.

10205040 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 10205040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16012368).

10205040 is an abundant number, since it is smaller than the sum of its proper divisors (21819696).

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

10205040 is a wasteful number, since it uses less digits than its factorization.

10205040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 10205040 is about 3194.5328296951. The cubic root of 10205040 is about 216.9060024556.

Adding to 10205040 its reverse (4050201), we get a palindrome (14255241).

The spelling of 10205040 in words is "ten million, two hundred five thousand, forty".