247140460 has 24 divisors (see below), whose sum is σ = 593137440. Its totient is φ = 84733824.

The previous prime is 247140449. The next prime is 247140473. The reversal of 247140460 is 64041742.

247140460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247140460² = 122156813938023200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882505 + ... + 882784.

It is an arithmetic number, because the mean of its divisors is an integer number (24714060).

Almost surely, 2^247140460 is an apocalyptic number.

247140460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247140460 is an abundant number, since it is smaller than the sum of its proper divisors (345996980).

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

247140460 is a wasteful number, since it uses less digits than its factorization.

247140460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765305 (or 1765303 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 247140460 is about 15720.7016382857. The cubic root of 247140460 is about 627.5494455833.

The spelling of 247140460 in words is "two hundred forty-seven million, one hundred forty thousand, four hundred sixty".