98142781 has 8 divisors (see below), whose sum is σ = 107222400. Its totient is φ = 89089440.

The previous prime is 98142763. The next prime is 98142787. The reversal of 98142781 is 18724189.

It is a happy number.

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

It is not a de Polignac number, because 98142781 - 2⁵ = 98142749 is a prime.

It is a super-2 number, since 2×98142781² = 19264010924827922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98142787) 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, 1705 + ... + 14113.

It is an arithmetic number, because the mean of its divisors is an integer number (13402800).

Almost surely, 2^98142781 is an apocalyptic number.

It is an amenable number.

98142781 is a deficient number, since it is larger than the sum of its proper divisors (9079619).

98142781 is a wasteful number, since it uses less digits than its factorization.

98142781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13139.

The product of its digits is 32256, while the sum is 40.

The square root of 98142781 is about 9906.7038413390. The cubic root of 98142781 is about 461.2674262358.

The spelling of 98142781 in words is "ninety-eight million, one hundred forty-two thousand, seven hundred eighty-one".