29135890 has 48 divisors (see below), whose sum is σ = 61736472. Its totient is φ = 9870336.

The previous prime is 29135867. The next prime is 29135891. The reversal of 29135890 is 9853192.

It can be written as a sum of positive squares in 4 ways, for example, as 12595401 + 16540489 = 3549^2 + 4067^2 .

It is not an unprimeable number, because it can be changed into a prime (29135891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47224 + ... + 47836.

Almost surely, 2^29135890 is an apocalyptic number.

29135890 is an abundant number, since it is smaller than the sum of its proper divisors (32600582).

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

29135890 is a wasteful number, since it uses less digits than its factorization.

29135890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 29135890 is about 5397.7671309533. The cubic root of 29135890 is about 307.7108167231.

The spelling of 29135890 in words is "twenty-nine million, one hundred thirty-five thousand, eight hundred ninety".