100028277 has 28 divisors (see below), whose sum is σ = 153509664. Its totient is φ = 65114280.

The previous prime is 100028261. The next prime is 100028281. The reversal of 100028277 is 772820001.

It is not a de Polignac number, because 100028277 - 2⁴ = 100028261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 100028277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100028207) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 29752 + ... + 32942.

It is an arithmetic number, because the mean of its divisors is an integer number (5482488).

Almost surely, 2^100028277 is an apocalyptic number.

It is an amenable number.

100028277 is a deficient number, since it is larger than the sum of its proper divisors (53481387).

100028277 is an frugal number, since it uses more digits than its factorization.

100028277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 100028277 is about 10001.4137500655. The cubic root of 100028277 is about 464.2026293073.

Adding to 100028277 its reverse (772820001), we get a palindrome (872848278).

The spelling of 100028277 in words is "one hundred million, twenty-eight thousand, two hundred seventy-seven".