3665887428 has 96 divisors (see below), whose sum is σ = 10140798976. Its totient is φ = 1008951552.

The previous prime is 3665887427. The next prime is 3665887451. The reversal of 3665887428 is 8247885663.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3665887427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256725 + ... + 270627.

Almost surely, 2^3665887428 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 3665887428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5070399488).

3665887428 is an abundant number, since it is smaller than the sum of its proper divisors (6474911548).

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

3665887428 is a wasteful number, since it uses less digits than its factorization.

3665887428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14033 (or 14031 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The square root of 3665887428 is about 60546.5723885341. The cubic root of 3665887428 is about 1541.9124253602.

The spelling of 3665887428 in words is "three billion, six hundred sixty-five million, eight hundred eighty-seven thousand, four hundred twenty-eight".