30136870 has 32 divisors (see below), whose sum is σ = 56930688. Its totient is φ = 11472768.

The previous prime is 30136861. The next prime is 30136891. The reversal of 30136870 is 7863103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16524 + ... + 18256.

It is an arithmetic number, because the mean of its divisors is an integer number (1779084).

Almost surely, 2^30136870 is an apocalyptic number.

30136870 is a deficient number, since it is larger than the sum of its proper divisors (26793818).

30136870 is a wasteful number, since it uses less digits than its factorization.

30136870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30136870 is about 5489.7058208979. The cubic root of 30136870 is about 311.1950747960.

Adding to 30136870 its reverse (7863103), we get a palindrome (37999973).

It can be divided in two parts, 301368 and 70, that multiplied together give a triangular number (21095760 = T₆₄₉₅).

The spelling of 30136870 in words is "thirty million, one hundred thirty-six thousand, eight hundred seventy".