247870480 has 160 divisors (see below), whose sum is σ = 692955648. Its totient is φ = 81254400.

The previous prime is 247870459. The next prime is 247870481. The reversal of 247870480 is 84078742.

It is a happy number.

It is a super-2 number, since 2×247870480² = 122879549710860800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (247870481) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 537450 + ... + 537910.

Almost surely, 2^247870480 is an apocalyptic number.

247870480 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 247870480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346477824).

247870480 is an abundant number, since it is smaller than the sum of its proper divisors (445085168).

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

247870480 is a wasteful number, since it uses less digits than its factorization.

247870480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 247870480 is about 15743.9029468553. The cubic root of 247870480 is about 628.1667373403.

The spelling of 247870480 in words is "two hundred forty-seven million, eight hundred seventy thousand, four hundred eighty".