247474380 has 48 divisors (see below), whose sum is σ = 702432864. Its totient is φ = 65088000.

The previous prime is 247474369. The next prime is 247474391. The reversal of 247474380 is 83474742.

It is an interprime number because it is at equal distance from previous prime (247474369) and next prime (247474391).

It is a super-2 number, since 2×247474380² = 122487137512768800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23871 + ... + 32630.

It is an arithmetic number, because the mean of its divisors is an integer number (14634018).

Almost surely, 2^247474380 is an apocalyptic number.

247474380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247474380 is an abundant number, since it is smaller than the sum of its proper divisors (454958484).

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

247474380 is a wasteful number, since it uses less digits than its factorization.

247474380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56586 (or 56584 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 39.

The square root of 247474380 is about 15731.3184444280. The cubic root of 247474380 is about 627.8319529536.

The spelling of 247474380 in words is "two hundred forty-seven million, four hundred seventy-four thousand, three hundred eighty".