206427398 has 4 divisors (see below), whose sum is σ = 309641100. Its totient is φ = 103213698.

The previous prime is 206427373. The next prime is 206427427. The reversal of 206427398 is 893724602.

It is a happy number.

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

It is a super-2 number, since 2×206427398² = 85224541290100808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51606848 + ... + 51606851.

It is an arithmetic number, because the mean of its divisors is an integer number (77410275).

Almost surely, 2^206427398 is an apocalyptic number.

206427398 is a deficient number, since it is larger than the sum of its proper divisors (103213702).

206427398 is a wasteful number, since it uses less digits than its factorization.

206427398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103213701.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 206427398 is about 14367.5814944618. The cubic root of 206427398 is about 591.0022207442.

The spelling of 206427398 in words is "two hundred six million, four hundred twenty-seven thousand, three hundred ninety-eight".