35721428 has 12 divisors (see below), whose sum is σ = 64202292. Its totient is φ = 17377920.

The previous prime is 35721421. The next prime is 35721431. The reversal of 35721428 is 82412753.

It can be written as a sum of positive squares in 2 ways, for example, as 31047184 + 4674244 = 5572^2 + 2162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 35721394 and 35721403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35721421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120533 + ... + 120828.

It is an arithmetic number, because the mean of its divisors is an integer number (5350191).

Almost surely, 2^35721428 is an apocalyptic number.

It is an amenable number.

35721428 is a deficient number, since it is larger than the sum of its proper divisors (28480864).

35721428 is a wasteful number, since it uses less digits than its factorization.

35721428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241402 (or 241400 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 35721428 is about 5976.7405832945. The cubic root of 35721428 is about 329.3388292431.

The spelling of 35721428 in words is "thirty-five million, seven hundred twenty-one thousand, four hundred twenty-eight".