30215742 has 8 divisors (see below), whose sum is σ = 60431496. Its totient is φ = 10071912.

The previous prime is 30215723. The next prime is 30215753. The reversal of 30215742 is 24751203.

It is a sphenic number, since it is the product of 3 distinct primes.

30215742 is an admirable number.

It is a super-2 number, since 2×30215742² = 1825982129221128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2517973 + ... + 2517984.

It is an arithmetic number, because the mean of its divisors is an integer number (7553937).

Almost surely, 2^30215742 is an apocalyptic number.

30215742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30215742 is a wasteful number, since it uses less digits than its factorization.

30215742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035962.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 30215742 is about 5496.8847541130. The cubic root of 30215742 is about 311.4663172633.

Adding to 30215742 its reverse (24751203), we get a palindrome (54966945).

The spelling of 30215742 in words is "thirty million, two hundred fifteen thousand, seven hundred forty-two".