29897487 has 12 divisors (see below), whose sum is σ = 44239104. Its totient is φ = 19445280.

The previous prime is 29897453. The next prime is 29897519. The reversal of 29897487 is 78479892.

It is not a de Polignac number, because 29897487 - 2⁷ = 29897359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29897587) 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, 40143 + ... + 40880.

It is an arithmetic number, because the mean of its divisors is an integer number (3686592).

Almost surely, 2^29897487 is an apocalyptic number.

29897487 is a deficient number, since it is larger than the sum of its proper divisors (14341617).

29897487 is a wasteful number, since it uses less digits than its factorization.

29897487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81070 (or 81067 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 29897487 is about 5467.8594532047. The cubic root of 29897487 is about 310.3689225571.

The spelling of 29897487 in words is "twenty-nine million, eight hundred ninety-seven thousand, four hundred eighty-seven".