30749943 has 8 divisors (see below), whose sum is σ = 46857088. Its totient is φ = 17571384.

The previous prime is 30749903. The next prime is 30749963. The reversal of 30749943 is 34994703.

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

It is not a de Polignac number, because 30749943 - 2⁶ = 30749879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30749903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732121 + ... + 732162.

It is an arithmetic number, because the mean of its divisors is an integer number (5857136).

Almost surely, 2^30749943 is an apocalyptic number.

30749943 is a deficient number, since it is larger than the sum of its proper divisors (16107145).

30749943 is a wasteful number, since it uses less digits than its factorization.

30749943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464293.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 30749943 is about 5545.2631136854. The cubic root of 30749943 is about 313.2911342244.

The spelling of 30749943 in words is "thirty million, seven hundred forty-nine thousand, nine hundred forty-three".