247242464 has 48 divisors (see below), whose sum is σ = 569884896. Its totient is φ = 103372800.

The previous prime is 247242461. The next prime is 247242467. The reversal of 247242464 is 464242742.

It is an interprime number because it is at equal distance from previous prime (247242461) and next prime (247242467).

It is a super-2 number, since 2×247242464² = 122257672009582592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247242461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4277 + ... + 22644.

It is an arithmetic number, because the mean of its divisors is an integer number (11872602).

Almost surely, 2^247242464 is an apocalyptic number.

It is an amenable number.

247242464 is an abundant number, since it is smaller than the sum of its proper divisors (322642432).

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

247242464 is a wasteful number, since it uses less digits than its factorization.

247242464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26979 (or 26971 counting only the distinct ones).

The product of its digits is 86016, while the sum is 35.

The square root of 247242464 is about 15723.9455608317. The cubic root of 247242464 is about 627.6357713228.

The spelling of 247242464 in words is "two hundred forty-seven million, two hundred forty-two thousand, four hundred sixty-four".