34521140 has 24 divisors (see below), whose sum is σ = 73070592. Its totient is φ = 13698720.

The previous prime is 34521133. The next prime is 34521143. The reversal of 34521140 is 4112543.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34521143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4256 + ... + 9335.

It is an arithmetic number, because the mean of its divisors is an integer number (3044608).

Almost surely, 2^34521140 is an apocalyptic number.

It is an amenable number.

34521140 is an abundant number, since it is smaller than the sum of its proper divisors (38549452).

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

34521140 is a wasteful number, since it uses less digits than its factorization.

34521140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13727 (or 13725 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 34521140 is about 5875.4693429547. The cubic root of 34521140 is about 325.6079822451.

Adding to 34521140 its reverse (4112543), we get a palindrome (38633683).

The spelling of 34521140 in words is "thirty-four million, five hundred twenty-one thousand, one hundred forty".