266948390 has 8 divisors (see below), whose sum is σ = 480507120. Its totient is φ = 106779352.

The previous prime is 266948389. The next prime is 266948413. The reversal of 266948390 is 93849662.

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

It is a super-2 number, since 2×266948390² = 142522885847184200, 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13347410 + ... + 13347429.

It is an arithmetic number, because the mean of its divisors is an integer number (60063390).

Almost surely, 2^266948390 is an apocalyptic number.

266948390 is a deficient number, since it is larger than the sum of its proper divisors (213558730).

266948390 is a wasteful number, since it uses less digits than its factorization.

266948390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26694846.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 266948390 is about 16338.5553216923. Note that the first 3 decimals coincide. The cubic root of 266948390 is about 643.8861773685.

The spelling of 266948390 in words is "two hundred sixty-six million, nine hundred forty-eight thousand, three hundred ninety".