74209274 has 4 divisors (see below), whose sum is σ = 111313914. Its totient is φ = 37104636.

The previous prime is 74209253. The next prime is 74209279. The reversal of 74209274 is 47290247.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 37908649 + 36300625 = 6157^2 + 6025^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (74209279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18552317 + ... + 18552320.

Almost surely, 2^74209274 is an apocalyptic number.

74209274 is a deficient number, since it is larger than the sum of its proper divisors (37104640).

74209274 is a wasteful number, since it uses less digits than its factorization.

74209274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37104639.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 74209274 is about 8614.4804834650. The cubic root of 74209274 is about 420.2290398513.

The spelling of 74209274 in words is "seventy-four million, two hundred nine thousand, two hundred seventy-four".