30481994 has 4 divisors (see below), whose sum is σ = 45722994. Its totient is φ = 15240996.

The previous prime is 30481993. The next prime is 30482017. The reversal of 30481994 is 49918403.

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., 23164969 + 7317025 = 4813^2 + 2705^2 .

It is not an unprimeable number, because it can be changed into a prime (30481993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7620497 + ... + 7620500.

Almost surely, 2^30481994 is an apocalyptic number.

30481994 is a deficient number, since it is larger than the sum of its proper divisors (15241000).

30481994 is a wasteful number, since it uses less digits than its factorization.

30481994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15240999.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 30481994 is about 5521.0500812798. The cubic root of 30481994 is about 312.3784922809.

The spelling of 30481994 in words is "thirty million, four hundred eighty-one thousand, nine hundred ninety-four".