247970940 has 48 divisors (see below), whose sum is σ = 793508352. Its totient is φ = 56678976.

The previous prime is 247970939. The next prime is 247971001. The reversal of 247970940 is 49079742.

It is a super-2 number, since 2×247970940² = 122979174168967200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 247970892 and 247970901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294784 + ... + 295623.

It is an arithmetic number, because the mean of its divisors is an integer number (16531424).

Almost surely, 2^247970940 is an apocalyptic number.

247970940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247970940 is an abundant number, since it is smaller than the sum of its proper divisors (545537412).

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

247970940 is a wasteful number, since it uses less digits than its factorization.

247970940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590426 (or 590424 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 247970940 is about 15747.0930650708. The cubic root of 247970940 is about 628.2515895945.

The spelling of 247970940 in words is "two hundred forty-seven million, nine hundred seventy thousand, nine hundred forty".