247738040 has 32 divisors (see below), whose sum is σ = 608085360. Its totient is φ = 90086400.

The previous prime is 247738033. The next prime is 247738103. The reversal of 247738040 is 40837742.

247738040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247738040² = 122748272926083200, 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 7 ways as a sum of consecutive naturals, for example, 281081 + ... + 281960.

Almost surely, 2^247738040 is an apocalyptic number.

247738040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247738040 is an abundant number, since it is smaller than the sum of its proper divisors (360347320).

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

247738040 is a wasteful number, since it uses less digits than its factorization.

247738040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563063 (or 563059 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 247738040 is about 15739.6963121910. The cubic root of 247738040 is about 628.0548385450.

The spelling of 247738040 in words is "two hundred forty-seven million, seven hundred thirty-eight thousand, forty".