3264728690 has 8 divisors (see below), whose sum is σ = 5876511660. Its totient is φ = 1305891472.

The previous prime is 3264728669. The next prime is 3264728693. The reversal of 3264728690 is 968274623.

It can be written as a sum of positive squares in 2 ways, for example, as 3260067409 + 4661281 = 57097^2 + 2159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3264728690² = 21316906838618232200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3264728693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163236425 + ... + 163236444.

Almost surely, 2^3264728690 is an apocalyptic number.

3264728690 is a deficient number, since it is larger than the sum of its proper divisors (2611782970).

3264728690 is a wasteful number, since it uses less digits than its factorization.

3264728690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326472876.

The product of its (nonzero) digits is 870912, while the sum is 47.

The square root of 3264728690 is about 57137.8043855380. The cubic root of 3264728690 is about 1483.4822873885.

The spelling of 3264728690 in words is "three billion, two hundred sixty-four million, seven hundred twenty-eight thousand, six hundred ninety".