30719442 has 32 divisors (see below), whose sum is σ = 70060032. Its totient is φ = 8895744.

The previous prime is 30719411. The next prime is 30719449. The reversal of 30719442 is 24491703.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30719449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10258 + ... + 12909.

It is an arithmetic number, because the mean of its divisors is an integer number (2189376).

Almost surely, 2^30719442 is an apocalyptic number.

30719442 is an abundant number, since it is smaller than the sum of its proper divisors (39340590).

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

30719442 is a wasteful number, since it uses less digits than its factorization.

30719442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23202.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 30719442 is about 5542.5122462652. The cubic root of 30719442 is about 313.1875150180.

The spelling of 30719442 in words is "thirty million, seven hundred nineteen thousand, four hundred forty-two".