3427649720 has 64 divisors (see below), whose sum is σ = 8424367200. Its totient is φ = 1244782080.

The previous prime is 3427649713. The next prime is 3427649737. The reversal of 3427649720 is 279467243.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360062 + ... + 369458.

Almost surely, 2^3427649720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3427649720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4212183600).

3427649720 is an abundant number, since it is smaller than the sum of its proper divisors (4996717480).

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

3427649720 is a wasteful number, since it uses less digits than its factorization.

3427649720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248 (or 10244 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 44.

The square root of 3427649720 is about 58546.1332625819. The cubic root of 3427649720 is about 1507.7597468499.

The spelling of 3427649720 in words is "three billion, four hundred twenty-seven million, six hundred forty-nine thousand, seven hundred twenty".