100012276 has 48 divisors (see below), whose sum is σ = 226764160. Its totient is φ = 37480320.

The previous prime is 100012273. The next prime is 100012277. The reversal of 100012276 is 672210001.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012273) 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, 315 + ... + 14146.

Almost surely, 2^100012276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100012276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113382080).

100012276 is an abundant number, since it is smaller than the sum of its proper divisors (126751884).

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

100012276 is a wasteful number, since it uses less digits than its factorization.

100012276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14504 (or 14502 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 100012276 is about 10000.6137811636. The cubic root of 100012276 is about 464.1778759656.

Adding to 100012276 its reverse (672210001), we get a palindrome (772222277).

The spelling of 100012276 in words is "one hundred million, twelve thousand, two hundred seventy-six".