30661744 has 60 divisors (see below), whose sum is σ = 66619000. Its totient is φ = 13630464.

The previous prime is 30661739. The next prime is 30661747. The reversal of 30661744 is 44716603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30661747) 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, 87682 + ... + 88030.

Almost surely, 2^30661744 is an apocalyptic number.

30661744 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30661744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33309500).

30661744 is an abundant number, since it is smaller than the sum of its proper divisors (35957256).

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

30661744 is a wasteful number, since it uses less digits than its factorization.

30661744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 30661744 is about 5537.3047595378. The cubic root of 30661744 is about 312.9913133377.

The spelling of 30661744 in words is "thirty million, six hundred sixty-one thousand, seven hundred forty-four".