247740948 has 144 divisors (see below), whose sum is σ = 787637760. Its totient is φ = 63908352.

The previous prime is 247740917. The next prime is 247740953. The reversal of 247740948 is 849047742.

247740948 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247740948² = 122751154631877408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153168 + ... + 154776.

Almost surely, 2^247740948 is an apocalyptic number.

247740948 is a gapful number since it is divisible by the number (28) 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 247740948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393818880).

247740948 is an abundant number, since it is smaller than the sum of its proper divisors (539896812).

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

247740948 is a wasteful number, since it uses less digits than its factorization.

247740948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1681 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 247740948 is about 15739.7886898141. The cubic root of 247740948 is about 628.0572959476.

The spelling of 247740948 in words is "two hundred forty-seven million, seven hundred forty thousand, nine hundred forty-eight".