78474790 has 8 divisors (see below), whose sum is σ = 141254640. Its totient is φ = 31389912.

The previous prime is 78474787. The next prime is 78474791. The reversal of 78474790 is 9747487.

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

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 78474790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78474791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3923730 + ... + 3923749.

It is an arithmetic number, because the mean of its divisors is an integer number (17656830).

Almost surely, 2^78474790 is an apocalyptic number.

78474790 is a deficient number, since it is larger than the sum of its proper divisors (62779850).

78474790 is a wasteful number, since it uses less digits than its factorization.

78474790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7847486.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 78474790 is about 8858.5997764884. The cubic root of 78474790 is about 428.1310448291.

The spelling of 78474790 in words is "seventy-eight million, four hundred seventy-four thousand, seven hundred ninety".