10520240 has 40 divisors (see below), whose sum is σ = 24708240. Its totient is φ = 4165376.

The previous prime is 10520227. The next prime is 10520291. The reversal of 10520240 is 4202501.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10520240² = 221350899315200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7946 + ... + 9174.

It is an arithmetic number, because the mean of its divisors is an integer number (617706).

Almost surely, 2^10520240 is an apocalyptic number.

10520240 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 10520240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12354120).

10520240 is an abundant number, since it is smaller than the sum of its proper divisors (14188000).

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

10520240 is a wasteful number, since it uses less digits than its factorization.

10520240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1343 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 10520240 is about 3243.4919454193. The cubic root of 10520240 is about 219.1165674272.

Adding to 10520240 its reverse (4202501), we get a palindrome (14722741).

The spelling of 10520240 in words is "ten million, five hundred twenty thousand, two hundred forty".