247224340 has 24 divisors (see below), whose sum is σ = 566368992. Its totient is φ = 89899680.

The previous prime is 247224331. The next prime is 247224359. The reversal of 247224340 is 43422742.

It is a super-2 number, since 2×247224340² = 122239748576871200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247224299 and 247224308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561654 + ... + 562093.

It is an arithmetic number, because the mean of its divisors is an integer number (23598708).

Almost surely, 2^247224340 is an apocalyptic number.

247224340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247224340 is an abundant number, since it is smaller than the sum of its proper divisors (319144652).

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

247224340 is a wasteful number, since it uses less digits than its factorization.

247224340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123767 (or 1123765 counting only the distinct ones).

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

The square root of 247224340 is about 15723.3692318154. The cubic root of 247224340 is about 627.6204347601.

The spelling of 247224340 in words is "two hundred forty-seven million, two hundred twenty-four thousand, three hundred forty".