78848451 has 16 divisors (see below), whose sum is σ = 127432320. Its totient is φ = 47786760.

The previous prime is 78848449. The next prime is 78848459. The reversal of 78848451 is 15484887.

It is not a de Polignac number, because 78848451 - 2¹ = 78848449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78848397 and 78848406.

It is not an unprimeable number, because it can be changed into a prime (78848459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132445 + ... + 133038.

It is an arithmetic number, because the mean of its divisors is an integer number (7964520).

Almost surely, 2^78848451 is an apocalyptic number.

78848451 is a deficient number, since it is larger than the sum of its proper divisors (48583869).

78848451 is a wasteful number, since it uses less digits than its factorization.

78848451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265503 (or 265497 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 78848451 is about 8879.6650274658. The cubic root of 78848451 is about 428.8094904517.

The spelling of 78848451 in words is "seventy-eight million, eight hundred forty-eight thousand, four hundred fifty-one".