98278111 has 4 divisors (see below), whose sum is σ = 98537800. Its totient is φ = 98018424.

The previous prime is 98278099. The next prime is 98278123. The reversal of 98278111 is 11187289.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (98278099) and next prime (98278123).

It is a 5-Lehmer number, since φ(98278111) divides (98278111-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 98278111 - 2¹⁷ = 98147039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98278181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129276 + ... + 130033.

It is an arithmetic number, because the mean of its divisors is an integer number (24634450).

Almost surely, 2^98278111 is an apocalyptic number.

98278111 is a deficient number, since it is larger than the sum of its proper divisors (259689).

98278111 is a wasteful number, since it uses less digits than its factorization.

98278111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259688.

The product of its digits is 8064, while the sum is 37.

The square root of 98278111 is about 9913.5317117564. The cubic root of 98278111 is about 461.4793441852.

It can be divided in two parts, 98278 and 111, that added together give a palindrome (98389).

The spelling of 98278111 in words is "ninety-eight million, two hundred seventy-eight thousand, one hundred eleven".