247342380 has 48 divisors (see below), whose sum is σ = 729012480. Its totient is φ = 62486208.

The previous prime is 247342349. The next prime is 247342387. The reversal of 247342380 is 83243742.

It is a super-2 number, since 2×247342380² = 122356505888128800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247342387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107344 + ... + 109623.

It is an arithmetic number, because the mean of its divisors is an integer number (15187760).

Almost surely, 2^247342380 is an apocalyptic number.

247342380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247342380 is an abundant number, since it is smaller than the sum of its proper divisors (481670100).

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

247342380 is a wasteful number, since it uses less digits than its factorization.

247342380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216998 (or 216996 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 247342380 is about 15727.1224322824. The cubic root of 247342380 is about 627.7203069766.

The spelling of 247342380 in words is "two hundred forty-seven million, three hundred forty-two thousand, three hundred eighty".