78472214 has 4 divisors (see below), whose sum is σ = 117708324. Its totient is φ = 39236106.

The previous prime is 78472213. The next prime is 78472217. The reversal of 78472214 is 41227487.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78472213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19618052 + ... + 19618055.

It is an arithmetic number, because the mean of its divisors is an integer number (29427081).

Almost surely, 2^78472214 is an apocalyptic number.

78472214 is a deficient number, since it is larger than the sum of its proper divisors (39236110).

78472214 is a wasteful number, since it uses less digits than its factorization.

78472214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39236109.

The product of its digits is 25088, while the sum is 35.

The square root of 78472214 is about 8858.4543798566. The cubic root of 78472214 is about 428.1263601925.

The spelling of 78472214 in words is "seventy-eight million, four hundred seventy-two thousand, two hundred fourteen".