103281640 has 64 divisors (see below), whose sum is σ = 289733760. Its totient is φ = 32190720.

The previous prime is 103281637. The next prime is 103281649. The reversal of 103281640 is 46182301.

It is a super-2 number, since 2×103281640² = 21334194322179200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103281649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13687 + ... + 19846.

It is an arithmetic number, because the mean of its divisors is an integer number (4527090).

Almost surely, 2^103281640 is an apocalyptic number.

103281640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103281640 is an abundant number, since it is smaller than the sum of its proper divisors (186452120).

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

103281640 is a wasteful number, since it uses less digits than its factorization.

103281640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33562 (or 33558 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 103281640 is about 10162.7574998127. The cubic root of 103281640 is about 469.1816754706.

The spelling of 103281640 in words is "one hundred three million, two hundred eighty-one thousand, six hundred forty".