30669444 has 81 divisors (see below), whose sum is σ = 85146789. Its totient is φ = 9303840.

The previous prime is 30669421. The next prime is 30669461. The reversal of 30669444 is 44496603.

The square root of 30669444 is 5538.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4536900 + 26132544 = 2130^2 + 5112^2 .

It is a super-2 number, since 2×30669444² = 1881229590538272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30669399 and 30669408.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 431929 + ... + 431999.

Almost surely, 2^30669444 is an apocalyptic number.

30669444 is the 5538-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30669444

30669444 is an abundant number, since it is smaller than the sum of its proper divisors (54477345).

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

30669444 is a wasteful number, since it uses less digits than its factorization.

30669444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The cubic root of 30669444 is about 313.0175113626.

Multiplying 30669444 by its sum of digits (36), we get a square (1104099984 = 33228²).

30669444 divided by its sum of digits (36) gives a square (851929 = 923²).

It can be divided in two parts, 30669 and 444, that added together give a palindrome (31113).

The spelling of 30669444 in words is "thirty million, six hundred sixty-nine thousand, four hundred forty-four".