103215740 has 48 divisors (see below), whose sum is σ = 224926464. Its totient is φ = 39744000.

The previous prime is 103215719. The next prime is 103215769. The reversal of 103215740 is 47512301.

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, 171440 + ... + 172040.

It is an arithmetic number, because the mean of its divisors is an integer number (4685968).

Almost surely, 2^103215740 is an apocalyptic number.

103215740 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 103215740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112463232).

103215740 is an abundant number, since it is smaller than the sum of its proper divisors (121710724).

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

103215740 is a wasteful number, since it uses less digits than its factorization.

103215740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 103215740 is about 10159.5147521917. The cubic root of 103215740 is about 469.0818653759.

It can be divided in two parts, 10321 and 5740, that added together give a palindrome (16061).

The spelling of 103215740 in words is "one hundred three million, two hundred fifteen thousand, seven hundred forty".