247878798 has 8 divisors (see below), whose sum is σ = 495757608. Its totient is φ = 82626264.

The previous prime is 247878793. The next prime is 247878809. The reversal of 247878798 is 897878742.

It is a happy number.

247878798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

247878798 is an admirable number.

It is a super-2 number, since 2×247878798² = 122887796995849608, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247878793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20656561 + ... + 20656572.

It is an arithmetic number, because the mean of its divisors is an integer number (61969701).

Almost surely, 2^247878798 is an apocalyptic number.

247878798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

247878798 is a wasteful number, since it uses less digits than its factorization.

247878798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41313138.

The product of its digits is 12644352, while the sum is 60.

The square root of 247878798 is about 15744.1671103936. The cubic root of 247878798 is about 628.1737639031.

The spelling of 247878798 in words is "two hundred forty-seven million, eight hundred seventy-eight thousand, seven hundred ninety-eight".