103621540 has 24 divisors (see below), whose sum is σ = 237388032. Its totient is φ = 37680480.

The previous prime is 103621513. The next prime is 103621547. The reversal of 103621540 is 45126301.

It is a super-3 number, since 3×103621540³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (103621547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235284 + ... + 235723.

It is an arithmetic number, because the mean of its divisors is an integer number (9891168).

Almost surely, 2^103621540 is an apocalyptic number.

103621540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103621540 is an abundant number, since it is smaller than the sum of its proper divisors (133766492).

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

103621540 is a wasteful number, since it uses less digits than its factorization.

103621540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471027 (or 471025 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 103621540 is about 10179.4665872039. The cubic root of 103621540 is about 469.6958043667.

Adding to 103621540 its reverse (45126301), we get a palindrome (148747841).

The spelling of 103621540 in words is "one hundred three million, six hundred twenty-one thousand, five hundred forty".