30764642 has 4 divisors (see below), whose sum is σ = 46146966. Its totient is φ = 15382320.

The previous prime is 30764641. The next prime is 30764653. The reversal of 30764642 is 24646703.

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., 29149201 + 1615441 = 5399^2 + 1271^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30764599 and 30764608.

It is not an unprimeable number, because it can be changed into a prime (30764641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7691159 + ... + 7691162.

Almost surely, 2^30764642 is an apocalyptic number.

30764642 is a deficient number, since it is larger than the sum of its proper divisors (15382324).

30764642 is a wasteful number, since it uses less digits than its factorization.

30764642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15382323.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 30764642 is about 5546.5883207608. The cubic root of 30764642 is about 313.3410457837.

The spelling of 30764642 in words is "thirty million, seven hundred sixty-four thousand, six hundred forty-two".