247381902 has 24 divisors (see below), whose sum is σ = 536297736. Its totient is φ = 82413936.

The previous prime is 247381879. The next prime is 247381907. The reversal of 247381902 is 209183742.

247381902 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247381902² = 122395610874275208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247381907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46188 + ... + 51264.

It is an arithmetic number, because the mean of its divisors is an integer number (22345739).

Almost surely, 2^247381902 is an apocalyptic number.

247381902 is an abundant number, since it is smaller than the sum of its proper divisors (288915834).

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

247381902 is a wasteful number, since it uses less digits than its factorization.

247381902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792 (or 7789 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 247381902 is about 15728.3788738700. The cubic root of 247381902 is about 627.7537389623.

The spelling of 247381902 in words is "two hundred forty-seven million, three hundred eighty-one thousand, nine hundred two".