247925240 has 16 divisors (see below), whose sum is σ = 557831880. Its totient is φ = 99170080.

The previous prime is 247925221. The next prime is 247925261. The reversal of 247925240 is 42529742.

It is a super-2 number, since 2×247925240² = 122933849258115200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247925240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3099026 + ... + 3099105.

Almost surely, 2^247925240 is an apocalyptic number.

247925240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247925240 is an abundant number, since it is smaller than the sum of its proper divisors (309906640).

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

247925240 is a wasteful number, since it uses less digits than its factorization.

247925240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198142 (or 6198138 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 247925240 is about 15745.6419367392. The cubic root of 247925240 is about 628.2129925159.

The spelling of 247925240 in words is "two hundred forty-seven million, nine hundred twenty-five thousand, two hundred forty".