10251240 has 32 divisors (see below), whose sum is σ = 30754080. Its totient is φ = 2733632.

The previous prime is 10251229. The next prime is 10251337. The reversal of 10251240 is 4215201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

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 7 ways as a sum of consecutive naturals, for example, 42594 + ... + 42833.

It is an arithmetic number, because the mean of its divisors is an integer number (961065).

Almost surely, 2^10251240 is an apocalyptic number.

10251240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10251240 is an abundant number, since it is smaller than the sum of its proper divisors (20502840).

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

10251240 is a wasteful number, since it uses less digits than its factorization.

10251240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85441 (or 85437 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 10251240 is about 3201.7557683246. The cubic root of 10251240 is about 217.2328335402.

Adding to 10251240 its reverse (4215201), we get a palindrome (14466441).

The spelling of 10251240 in words is "ten million, two hundred fifty-one thousand, two hundred forty".