78414247 has 8 divisors (see below), whose sum is σ = 79202816. Its totient is φ = 77629752.

The previous prime is 78414233. The next prime is 78414253. The reversal of 78414247 is 74241487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78414247 - 2¹¹ = 78412199 is a prime.

It is a super-2 number, since 2×78414247² = 12297588265154018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78414257) 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, 49258 + ... + 50824.

It is an arithmetic number, because the mean of its divisors is an integer number (9900352).

Almost surely, 2^78414247 is an apocalyptic number.

78414247 is a deficient number, since it is larger than the sum of its proper divisors (788569).

78414247 is a wasteful number, since it uses less digits than its factorization.

78414247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037.

The product of its digits is 50176, while the sum is 37.

The square root of 78414247 is about 8855.1819292435. The cubic root of 78414247 is about 428.0209160157.

The spelling of 78414247 in words is "seventy-eight million, four hundred fourteen thousand, two hundred forty-seven".