29666672 has 20 divisors (see below), whose sum is σ = 65690736. Its totient is φ = 12714240.

The previous prime is 29666671. The next prime is 29666699. The reversal of 29666672 is 27666692.

It is a super-2 number, since 2×29666672² = 1760222855111168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29666671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132329 + ... + 132552.

Almost surely, 2^29666672 is an apocalyptic number.

It is an amenable number.

29666672 is an abundant number, since it is smaller than the sum of its proper divisors (36024064).

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

29666672 is a wasteful number, since it uses less digits than its factorization.

29666672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264896 (or 264890 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 29666672 is about 5446.7120357148. The cubic root of 29666672 is about 309.5681534634.

The spelling of 29666672 in words is "twenty-nine million, six hundred sixty-six thousand, six hundred seventy-two".