29427885 has 24 divisors (see below), whose sum is σ = 51304344. Its totient is φ = 15603840.

The previous prime is 29427883. The next prime is 29427887. The reversal of 29427885 is 58872492.

It is an interprime number because it is at equal distance from previous prime (29427883) and next prime (29427887).

It can be written as a sum of positive squares in 4 ways, for example, as 4447881 + 24980004 = 2109^2 + 4998^2 .

It is not a de Polignac number, because 29427885 - 2¹ = 29427883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 29427885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29427883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6339 + ... + 9951.

It is an arithmetic number, because the mean of its divisors is an integer number (2137681).

Almost surely, 2^29427885 is an apocalyptic number.

It is an amenable number.

29427885 is a deficient number, since it is larger than the sum of its proper divisors (21876459).

29427885 is a wasteful number, since it uses less digits than its factorization.

29427885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805 (or 3802 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 29427885 is about 5424.7474595598. The cubic root of 29427885 is about 308.7353438163.

The spelling of 29427885 in words is "twenty-nine million, four hundred twenty-seven thousand, eight hundred eighty-five".