78953454 has 40 divisors (see below), whose sum is σ = 181244448. Its totient is φ = 25673760.

The previous prime is 78953453. The next prime is 78953471. The reversal of 78953454 is 45435987.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78953453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 699 + ... + 12585.

Almost surely, 2^78953454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78953454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90622224).

78953454 is an abundant number, since it is smaller than the sum of its proper divisors (102290994).

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

78953454 is a wasteful number, since it uses less digits than its factorization.

78953454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942 (or 11933 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 78953454 is about 8885.5756144439. The cubic root of 78953454 is about 428.9997554891. Note that the first 3 decimals are identical.

The spelling of 78953454 in words is "seventy-eight million, nine hundred fifty-three thousand, four hundred fifty-four".