29681480 has 16 divisors (see below), whose sum is σ = 66783420. Its totient is φ = 11872576.

The previous prime is 29681467. The next prime is 29681501. The reversal of 29681480 is 8418692.

It can be written as a sum of positive squares in 2 ways, for example, as 26604964 + 3076516 = 5158^2 + 1754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370979 + ... + 371058.

Almost surely, 2^29681480 is an apocalyptic number.

29681480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29681480 is an abundant number, since it is smaller than the sum of its proper divisors (37101940).

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

29681480 is a wasteful number, since it uses less digits than its factorization.

29681480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742048 (or 742044 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 29681480 is about 5448.0712183304. The cubic root of 29681480 is about 309.6196514622.

The spelling of 29681480 in words is "twenty-nine million, six hundred eighty-one thousand, four hundred eighty".