8242690 has 8 divisors (see below), whose sum is σ = 14836860. Its totient is φ = 3297072.

The previous prime is 8242687. The next prime is 8242693. The reversal of 8242690 is 962428.

It is an interprime number because it is at equal distance from previous prime (8242687) and next prime (8242693).

It can be written as a sum of positive squares in 2 ways, for example, as 8242641 + 49 = 2871^2 + 7^2 .

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

It is a super-2 number, since 2×8242690² = 135883876872200, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8242693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412125 + ... + 412144.

Almost surely, 2^8242690 is an apocalyptic number.

8242690 is a deficient number, since it is larger than the sum of its proper divisors (6594170).

8242690 is a wasteful number, since it uses less digits than its factorization.

8242690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824276.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 8242690 is about 2871.0085335993. The cubic root of 8242690 is about 202.0023036694.

The spelling of 8242690 in words is "eight million, two hundred forty-two thousand, six hundred ninety".