309074 has 8 divisors (see below), whose sum is σ = 483840.
Its totient is φ = 147796.
The previous prime is 309059. The next prime is 309079. The reversal of 309074 is 470903.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a Harshad number since it is a multiple of its sum of digits (23).
It is an alternating number because its digits alternate between odd and even.
It is not an unprimeable number, because it can be changed into a prime (309079) 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, 3314 + ... + 3405.
It is an arithmetic number, because the mean of its divisors is an integer number (60480).
2309074 is an apocalyptic number.
309074 is a deficient number, since it is larger than the sum of its proper divisors (174766).
309074 is a wasteful number, since it uses less digits than its factorization.
309074 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6744.
The product of its (nonzero) digits is 756, while the sum is 23.
The square root of 309074 is about 555.9442418085.
The cubic root of 309074 is about 67.6115394094.
Adding to 309074 its reverse (470903), we get a palindrome (779977).
The spelling of 309074 in words is "three hundred nine thousand, seventy-four".