320400098 has 4 divisors (see below), whose sum is σ = 480600150. Its totient is φ = 160200048.

The previous prime is 320400077. The next prime is 320400103. The reversal of 320400098 is 890004023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 890004023 = 19 ⋅46842317.

It can be written as a sum of positive squares in only one way, i.e., 160706329 + 159693769 = 12677^2 + 12637^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80100023 + ... + 80100026.

Almost surely, 2^320400098 is an apocalyptic number.

320400098 is a deficient number, since it is larger than the sum of its proper divisors (160200052).

320400098 is a wasteful number, since it uses less digits than its factorization.

320400098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160200051.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 320400098 is about 17899.7234056842. The cubic root of 320400098 is about 684.2753257617.

The spelling of 320400098 in words is "three hundred twenty million, four hundred thousand, ninety-eight".