247454478 has 12 divisors (see below), whose sum is σ = 536151408. Its totient is φ = 82484820.

The previous prime is 247454453. The next prime is 247454479. The reversal of 247454478 is 874454742.

It is a super-2 number, since 2×247454478² = 122467437364504968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247454479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6873718 + ... + 6873753.

It is an arithmetic number, because the mean of its divisors is an integer number (44679284).

Almost surely, 2^247454478 is an apocalyptic number.

247454478 is an abundant number, since it is smaller than the sum of its proper divisors (288696930).

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

247454478 is a wasteful number, since it uses less digits than its factorization.

247454478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13747479 (or 13747476 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 45.

The square root of 247454478 is about 15730.6858718875. The cubic root of 247454478 is about 627.8151223272.

The spelling of 247454478 in words is "two hundred forty-seven million, four hundred fifty-four thousand, four hundred seventy-eight".