30473649 has 6 divisors (see below), whose sum is σ = 44017506. Its totient is φ = 20315760.

The previous prime is 30473647. The next prime is 30473657. The reversal of 30473649 is 94637403.

30473649 is a `hidden beast` number, since 3 + 0 + 4 + 7 + 3 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 3249 = 5520^2 + 57^2 .

It is not a de Polignac number, because 30473649 - 2¹ = 30473647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30473647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1692972 + ... + 1692989.

It is an arithmetic number, because the mean of its divisors is an integer number (7336251).

Almost surely, 2^30473649 is an apocalyptic number.

It is an amenable number.

30473649 is a deficient number, since it is larger than the sum of its proper divisors (13543857).

30473649 is a wasteful number, since it uses less digits than its factorization.

30473649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385967 (or 3385964 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 30473649 is about 5520.2942856337. The cubic root of 30473649 is about 312.3499832488.

The spelling of 30473649 in words is "thirty million, four hundred seventy-three thousand, six hundred forty-nine".