247034440 has 16 divisors (see below), whose sum is σ = 555827580. Its totient is φ = 98813760.

The previous prime is 247034423. The next prime is 247034461. The reversal of 247034440 is 44430742.

247034440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 246552804 + 481636 = 15702^2 + 694^2 .

It is a super-2 number, since 2×247034440² = 122052029092227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247034399 and 247034408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087891 + ... + 3087970.

Almost surely, 2^247034440 is an apocalyptic number.

247034440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247034440 is an abundant number, since it is smaller than the sum of its proper divisors (308793140).

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

247034440 is a wasteful number, since it uses less digits than its factorization.

247034440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6175872 (or 6175868 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 247034440 is about 15717.3292896726. The cubic root of 247034440 is about 627.4596959346.

The spelling of 247034440 in words is "two hundred forty-seven million, thirty-four thousand, four hundred forty".