98078638 has 32 divisors (see below), whose sum is σ = 178660800. Its totient is φ = 39481344.

The previous prime is 98078633. The next prime is 98078663. The reversal of 98078638 is 83687089.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 98078591 and 98078600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98078633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11758 + ... + 18286.

It is an arithmetic number, because the mean of its divisors is an integer number (5583150).

Almost surely, 2^98078638 is an apocalyptic number.

98078638 is a deficient number, since it is larger than the sum of its proper divisors (80582162).

98078638 is a wasteful number, since it uses less digits than its factorization.

98078638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6604.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 98078638 is about 9903.4659589459. The cubic root of 98078638 is about 461.1669144294.

The spelling of 98078638 in words is "ninety-eight million, seventy-eight thousand, six hundred thirty-eight".