35386640 has 20 divisors (see below), whose sum is σ = 82274124. Its totient is φ = 14154624.

The previous prime is 35386633. The next prime is 35386643. The reversal of 35386640 is 4668353.

It can be written as a sum of positive squares in 2 ways, for example, as 14992384 + 20394256 = 3872^2 + 4516^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 35386640.

It is not an unprimeable number, because it can be changed into a prime (35386643) 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, 221087 + ... + 221246.

Almost surely, 2^35386640 is an apocalyptic number.

It is an amenable number.

35386640 is an abundant number, since it is smaller than the sum of its proper divisors (46887484).

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

35386640 is a wasteful number, since it uses less digits than its factorization.

35386640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442346 (or 442340 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 35386640 is about 5948.6670775897. The cubic root of 35386640 is about 328.3067228012.

The spelling of 35386640 in words is "thirty-five million, three hundred eighty-six thousand, six hundred forty".