74720246 has 8 divisors (see below), whose sum is σ = 112120200. Its totient is φ = 37346848.

The previous prime is 74720237. The next prime is 74720249. The reversal of 74720246 is 64202747.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74720249) 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, 3485 + ... + 12711.

It is an arithmetic number, because the mean of its divisors is an integer number (14015025).

Almost surely, 2^74720246 is an apocalyptic number.

74720246 is a deficient number, since it is larger than the sum of its proper divisors (37399954).

74720246 is a wasteful number, since it uses less digits than its factorization.

74720246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13278.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 74720246 is about 8644.0873433810. The cubic root of 74720246 is about 421.1913378852.

The spelling of 74720246 in words is "seventy-four million, seven hundred twenty thousand, two hundred forty-six".