247340740 has 12 divisors (see below), whose sum is σ = 519415596. Its totient is φ = 98936288.

The previous prime is 247340713. The next prime is 247340749. The reversal of 247340740 is 47043742.

247340740 is digitally balanced in base 3, 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 156100036 + 91240704 = 12494^2 + 9552^2 .

It is a super-2 number, since 2×247340740² = 122354883327495200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247340749) 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, 6183499 + ... + 6183538.

It is an arithmetic number, because the mean of its divisors is an integer number (43284633).

Almost surely, 2^247340740 is an apocalyptic number.

247340740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247340740 is an abundant number, since it is smaller than the sum of its proper divisors (272074856).

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

247340740 is a wasteful number, since it uses less digits than its factorization.

247340740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12367046 (or 12367044 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 31.

The square root of 247340740 is about 15727.0702929694. The cubic root of 247340740 is about 627.7189196101.

The spelling of 247340740 in words is "two hundred forty-seven million, three hundred forty thousand, seven hundred forty".