248906690 has 32 divisors (see below), whose sum is σ = 495020160. Its totient is φ = 89630464.

The previous prime is 248906687. The next prime is 248906699. The reversal of 248906690 is 96609842.

It is a super-2 number, since 2×248906690² = 123909080653512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (248906699) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 27920 + ... + 35739.

It is an arithmetic number, because the mean of its divisors is an integer number (15469380).

Almost surely, 2^248906690 is an apocalyptic number.

248906690 is a deficient number, since it is larger than the sum of its proper divisors (246113470).

248906690 is a wasteful number, since it uses less digits than its factorization.

248906690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63706.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 248906690 is about 15776.7769205247. The cubic root of 248906690 is about 629.0408601480.

The spelling of 248906690 in words is "two hundred forty-eight million, nine hundred six thousand, six hundred ninety".