98028421 has 4 divisors (see below), whose sum is σ = 98147500. Its totient is φ = 97909344.

The previous prime is 98028407. The next prime is 98028449. The reversal of 98028421 is 12482089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12482089 = 3533².

It can be written as a sum of positive squares in 2 ways, for example, as 37344321 + 60684100 = 6111^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 98028421 - 2²³ = 89639813 is a prime.

It is a super-3 number, since 3×98028421³ (a number of 25 digits) contains 333 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 (98028401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58296 + ... + 59953.

It is an arithmetic number, because the mean of its divisors is an integer number (24536875).

Almost surely, 2^98028421 is an apocalyptic number.

It is an amenable number.

98028421 is a deficient number, since it is larger than the sum of its proper divisors (119079).

98028421 is a wasteful number, since it uses less digits than its factorization.

98028421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119078.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 98028421 is about 9900.9303098244. The cubic root of 98028421 is about 461.0881940170.

The spelling of 98028421 in words is "ninety-eight million, twenty-eight thousand, four hundred twenty-one".