30677942 has 8 divisors (see below), whose sum is σ = 46472832. Its totient is φ = 15187000.

The previous prime is 30677903. The next prime is 30677947. The reversal of 30677942 is 24977603.

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

It is a super-2 number, since 2×30677942² = 1882272250710728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30677896 and 30677905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30677947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75734 + ... + 76137.

It is an arithmetic number, because the mean of its divisors is an integer number (5809104).

Almost surely, 2^30677942 is an apocalyptic number.

30677942 is a deficient number, since it is larger than the sum of its proper divisors (15794890).

30677942 is a wasteful number, since it uses less digits than its factorization.

30677942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151974.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 30677942 is about 5538.7671913522. The cubic root of 30677942 is about 313.0464193659.

The spelling of 30677942 in words is "thirty million, six hundred seventy-seven thousand, nine hundred forty-two".