30494146 has 4 divisors (see below), whose sum is σ = 45741222. Its totient is φ = 15247072.

The previous prime is 30494143. The next prime is 30494147. The reversal of 30494146 is 64149403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64149403 = 647 ⋅99149.

It can be written as a sum of positive squares in only one way, i.e., 22992025 + 7502121 = 4795^2 + 2739^2 .

It is a super-4 number, since 4×30494146⁴ (a number of 31 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 30494146 parts by 7809 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (30494143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7623535 + ... + 7623538.

Almost surely, 2^30494146 is an apocalyptic number.

30494146 is a deficient number, since it is larger than the sum of its proper divisors (15247076).

30494146 is a wasteful number, since it uses less digits than its factorization.

30494146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15247075.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 30494146 is about 5522.1504869027. The cubic root of 30494146 is about 312.4199978673.

The spelling of 30494146 in words is "thirty million, four hundred ninety-four thousand, one hundred forty-six".