247369984 has 27 divisors (see below), whose sum is σ = 494276503. Its totient is φ = 123559168.

The previous prime is 247369981. The next prime is 247370003. The reversal of 247369984 is 489963742.

It is a happy number.

The square root of 247369984 is 15728.

It is a perfect power (a square), and thus also a powerful number.

247369984 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 2×247369984² = 122383817968320512, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247369981) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 251157 + ... + 252139.

Almost surely, 2^247369984 is an apocalyptic number.

247369984 is the 15728-th square number.

It is an amenable number.

247369984 is a deficient number, since it is larger than the sum of its proper divisors (246906519).

247369984 is an frugal number, since it uses more digits than its factorization.

247369984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 985 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The cubic root of 247369984 is about 627.7436578028.

The spelling of 247369984 in words is "two hundred forty-seven million, three hundred sixty-nine thousand, nine hundred eighty-four".