246921890 has 8 divisors (see below), whose sum is σ = 444459420. Its totient is φ = 98768752.

The previous prime is 246921887. The next prime is 246921893. The reversal of 246921890 is 98129642.

It is an interprime number because it is at equal distance from previous prime (246921887) and next prime (246921893).

It can be written as a sum of positive squares in 2 ways, for example, as 243953161 + 2968729 = 15619^2 + 1723^2 .

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

It is a super-2 number, since 2×246921890² = 121940839522344200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (246921893) by changing a digit.

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, 12346085 + ... + 12346104.

Almost surely, 2^246921890 is an apocalyptic number.

246921890 is a deficient number, since it is larger than the sum of its proper divisors (197537530).

246921890 is a wasteful number, since it uses less digits than its factorization.

246921890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24692196.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 246921890 is about 15713.7484388672. The cubic root of 246921890 is about 627.3643903077.

The spelling of 246921890 in words is "two hundred forty-six million, nine hundred twenty-one thousand, eight hundred ninety".