30694139 has 12 divisors (see below), whose sum is σ = 37585800. Its totient is φ = 24923808.

The previous prime is 30694109. The next prime is 30694171. The reversal of 30694139 is 93149603.

30694139 = T₃₀₂ + T₃₀₃ + ... + T₅₉₅.

It is not a de Polignac number, because 30694139 - 2¹² = 30690043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30694099 and 30694108.

It is not an unprimeable number, because it can be changed into a prime (30694109) 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, 15554 + ... + 17415.

It is an arithmetic number, because the mean of its divisors is an integer number (3132150).

Almost surely, 2^30694139 is an apocalyptic number.

30694139 is a deficient number, since it is larger than the sum of its proper divisors (6891661).

30694139 is a wasteful number, since it uses less digits than its factorization.

30694139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33002 (or 32995 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 30694139 is about 5540.2291468855. The cubic root of 30694139 is about 313.1015026000.

The spelling of 30694139 in words is "thirty million, six hundred ninety-four thousand, one hundred thirty-nine".