30494145 has 64 divisors (see below), whose sum is σ = 57231360. Its totient is φ = 13708800.

The previous prime is 30494143. The next prime is 30494147. The reversal of 30494145 is 54149403.

30494145 is a nontrivial binomial coefficient, being equal to C(7810, 2).

It is an interprime number because it is at equal distance from previous prime (30494143) and next prime (30494147).

It is not a de Polignac number, because 30494145 - 2¹ = 30494143 is a prime.

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 in 63 ways as a sum of consecutive naturals, for example, 222517 + ... + 222653.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^30494145 is an apocalyptic number.

30494145 is the 7809-th triangular number and also the 3905-th hexagonal number.

It is an amenable number.

30494145 is a deficient number, since it is larger than the sum of its proper divisors (26737215).

30494145 is a wasteful number, since it uses less digits than its factorization.

30494145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 30494145 is about 5522.1503963583. The cubic root of 30494145 is about 312.4199944522.

It can be divided in two parts, 304 and 94145, that added together give a palindrome (94449).

The spelling of 30494145 in words is "thirty million, four hundred ninety-four thousand, one hundred forty-five".