74212478 has 8 divisors (see below), whose sum is σ = 113143800. Its totient is φ = 36497880.

The previous prime is 74212471. The next prime is 74212547. The reversal of 74212478 is 87421247.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74212471) 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, 304028 + ... + 304271.

It is an arithmetic number, because the mean of its divisors is an integer number (14142975).

Almost surely, 2^74212478 is an apocalyptic number.

74212478 is a deficient number, since it is larger than the sum of its proper divisors (38931322).

74212478 is a wasteful number, since it uses less digits than its factorization.

74212478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608362.

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

The square root of 74212478 is about 8614.6664474024. Note that the first 3 decimals coincide. The cubic root of 74212478 is about 420.2350875881.

The spelling of 74212478 in words is "seventy-four million, two hundred twelve thousand, four hundred seventy-eight".