100415540 has 24 divisors (see below), whose sum is σ = 211196160. Its totient is φ = 40104608.

The previous prime is 100415537. The next prime is 100415573. The reversal of 100415540 is 45514001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 10889 + ... + 17871.

It is an arithmetic number, because the mean of its divisors is an integer number (8799840).

Almost surely, 2^100415540 is an apocalyptic number.

100415540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100415540 is an abundant number, since it is smaller than the sum of its proper divisors (110780620).

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

100415540 is a wasteful number, since it uses less digits than its factorization.

100415540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711 (or 7709 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 100415540 is about 10020.7554605429. The cubic root of 100415540 is about 464.8009168201.

Adding to 100415540 its reverse (45514001), we get a palindrome (145929541).

The spelling of 100415540 in words is "one hundred million, four hundred fifteen thousand, five hundred forty".