34721000 has 32 divisors (see below), whose sum is σ = 81249480. Its totient is φ = 13888000.

The previous prime is 34720993. The next prime is 34721009. The reversal of 34721000 is 12743.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11546404 + 23174596 = 3398^2 + 4814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 34721000.

It is not an unprimeable number, because it can be changed into a prime (34721009) 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 7 ways as a sum of consecutive naturals, for example, 16361 + ... + 18360.

Almost surely, 2^34721000 is an apocalyptic number.

It is an amenable number.

34721000 is an abundant number, since it is smaller than the sum of its proper divisors (46528480).

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

34721000 is a wasteful number, since it uses less digits than its factorization.

34721000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34742 (or 34728 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 34721000 is about 5892.4527999807. The cubic root of 34721000 is about 326.2351421819.

Adding to 34721000 its reverse (12743), we get a palindrome (34733743).

The spelling of 34721000 in words is "thirty-four million, seven hundred twenty-one thousand".