30291642 has 24 divisors (see below), whose sum is σ = 66533844. Its totient is φ = 9958464.

The previous prime is 30291623. The next prime is 30291649. The reversal of 30291642 is 24619203.

It can be written as a sum of positive squares in 2 ways, for example, as 29387241 + 904401 = 5421^2 + 951^2 .

It is not an unprimeable number, because it can be changed into a prime (30291649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10213 + ... + 12840.

Almost surely, 2^30291642 is an apocalyptic number.

30291642 is an abundant number, since it is smaller than the sum of its proper divisors (36242202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30291642 is a wasteful number, since it uses less digits than its factorization.

30291642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23134 (or 23131 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 30291642 is about 5503.7843344375. The cubic root of 30291642 is about 311.7268936516.

The spelling of 30291642 in words is "thirty million, two hundred ninety-one thousand, six hundred forty-two".