30734136 has 24 divisors (see below), whose sum is σ = 83238480. Its totient is φ = 10244688.

The previous prime is 30734131. The next prime is 30734149. The reversal of 30734136 is 63143703.

30734136 = T₁₄₀ + T₁₄₁ + ... + T₅₇₁.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30734131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213360 + ... + 213503.

It is an arithmetic number, because the mean of its divisors is an integer number (3468270).

Almost surely, 2^30734136 is an apocalyptic number.

30734136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30734136 is an abundant number, since it is smaller than the sum of its proper divisors (52504344).

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

30734136 is a wasteful number, since it uses less digits than its factorization.

30734136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426875 (or 426868 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 30734136 is about 5543.8376599608. The cubic root of 30734136 is about 313.2374426153.

Adding to 30734136 its reverse (63143703), we get a palindrome (93877839).

It can be divided in two parts, 307 and 34136, that added together give a palindrome (34443).

The spelling of 30734136 in words is "thirty million, seven hundred thirty-four thousand, one hundred thirty-six".