100428549 has 8 divisors (see below), whose sum is σ = 144205152. Its totient is φ = 61802160.

The previous prime is 100428541. The next prime is 100428551. The reversal of 100428549 is 945824001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100428549 - 2³ = 100428541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100428541) 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, 1287507 + ... + 1287584.

It is an arithmetic number, because the mean of its divisors is an integer number (18025644).

Almost surely, 2^100428549 is an apocalyptic number.

It is an amenable number.

100428549 is a deficient number, since it is larger than the sum of its proper divisors (43776603).

100428549 is a wasteful number, since it uses less digits than its factorization.

100428549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575107.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 100428549 is about 10021.4045422785. The cubic root of 100428549 is about 464.8209878637.

The spelling of 100428549 in words is "one hundred million, four hundred twenty-eight thousand, five hundred forty-nine".