247073220 has 96 divisors (see below), whose sum is σ = 780259200. Its totient is φ = 64893312.

The previous prime is 247073209. The next prime is 247073249. The reversal of 247073220 is 22370742.

It is a super-2 number, since 2×247073220² = 122090352082336800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 32766 + ... + 39594.

It is an arithmetic number, because the mean of its divisors is an integer number (8127700).

Almost surely, 2^247073220 is an apocalyptic number.

247073220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247073220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390129600).

247073220 is an abundant number, since it is smaller than the sum of its proper divisors (533185980).

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

247073220 is a wasteful number, since it uses less digits than its factorization.

247073220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6914 (or 6906 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 247073220 is about 15718.5629114115. The cubic root of 247073220 is about 627.4925275429.

The spelling of 247073220 in words is "two hundred forty-seven million, seventy-three thousand, two hundred twenty".