34138872 has 24 divisors (see below), whose sum is σ = 92459640. Its totient is φ = 11379600.

The previous prime is 34138849. The next prime is 34138879. The reversal of 34138872 is 27883143.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34138879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237004 + ... + 237147.

It is an arithmetic number, because the mean of its divisors is an integer number (3852485).

Almost surely, 2^34138872 is an apocalyptic number.

It is an amenable number.

34138872 is an abundant number, since it is smaller than the sum of its proper divisors (58320768).

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

34138872 is a wasteful number, since it uses less digits than its factorization.

34138872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474163 (or 474156 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 34138872 is about 5842.8479357245. The cubic root of 34138872 is about 324.4016509449.

The spelling of 34138872 in words is "thirty-four million, one hundred thirty-eight thousand, eight hundred seventy-two".