246989840 has 20 divisors (see below), whose sum is σ = 574251564. Its totient is φ = 98795904.

The previous prime is 246989791. The next prime is 246989849. The reversal of 246989840 is 48989642.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 195552256 + 51437584 = 13984^2 + 7172^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×246989840² = 122007962126451200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (246989849) 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, 1543607 + ... + 1543766.

Almost surely, 2^246989840 is an apocalyptic number.

246989840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

246989840 is an abundant number, since it is smaller than the sum of its proper divisors (327261724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

246989840 is a wasteful number, since it uses less digits than its factorization.

246989840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087386 (or 3087380 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 246989840 is about 15715.9104095181. The cubic root of 246989840 is about 627.4219327969.

The spelling of 246989840 in words is "two hundred forty-six million, nine hundred eighty-nine thousand, eight hundred forty".