30740816 has 20 divisors (see below), whose sum is σ = 61014324.
Its totient is φ = 14995200.
The previous prime is 30740813. The next prime is 30740819. The reversal of 30740816 is 61804703.
It is an interprime number because it is at equal distance from previous prime (30740813) and next prime (30740819).
It can be written as a sum of positive squares in 2 ways, for example, as 5740816 + 25000000 = 2396^2 + 5000^2
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30740813) 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, 22775 + ... + 24086.
Almost surely, 230740816 is an apocalyptic number.
It is an amenable number.
30740816 is a deficient number, since it is larger than the sum of its proper divisors (30273508).
30740816 is a wasteful number, since it uses less digits than its factorization.
30740816 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 46910 (or 46904 counting only the distinct ones).
The product of its (nonzero) digits is 4032, while the sum is 29.
The square root of 30740816 is about 5544.4400979720.
The cubic root of 30740816 is about 313.2601348051.
The spelling of 30740816 in words is "thirty million, seven hundred forty thousand, eight hundred sixteen".