100434800 has 30 divisors (see below), whose sum is σ = 241295568. Its totient is φ = 40173760.

The previous prime is 100434769. The next prime is 100434821. The reversal of 100434800 is 8434001.

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 5 ways as a sum of consecutive naturals, for example, 125144 + ... + 125943.

Almost surely, 2^100434800 is an apocalyptic number.

100434800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100434800 is an abundant number, since it is smaller than the sum of its proper divisors (140860768).

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

100434800 is a wasteful number, since it uses less digits than its factorization.

100434800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251105 (or 251094 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 100434800 is about 10021.7164198554. The cubic root of 100434800 is about 464.8306316544.

Adding to 100434800 its reverse (8434001), we get a palindrome (108868801).

The spelling of 100434800 in words is "one hundred million, four hundred thirty-four thousand, eight hundred".