100648988 has 12 divisors (see below), whose sum is σ = 192148152. Its totient is φ = 45749520.

The previous prime is 100648981. The next prime is 100649011. The reversal of 100648988 is 889846001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 2287477 = 100648988 / (1 + 0 + 0 + 6 + 4 + 8 + 9 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100648981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143695 + ... + 1143782.

It is an arithmetic number, because the mean of its divisors is an integer number (16012346).

Almost surely, 2^100648988 is an apocalyptic number.

It is an amenable number.

100648988 is a deficient number, since it is larger than the sum of its proper divisors (91499164).

100648988 is a wasteful number, since it uses less digits than its factorization.

100648988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287492 (or 2287490 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 100648988 is about 10032.3969219723. The cubic root of 100648988 is about 465.1608307889.

It can be divided in two parts, 1006 and 48988, that added together give a palindrome (49994).

The spelling of 100648988 in words is "one hundred million, six hundred forty-eight thousand, nine hundred eighty-eight".