387812752 has 40 divisors (see below), whose sum is σ = 786574656. Its totient is φ = 184880256.

The previous prime is 387812741. The next prime is 387812753. The reversal of 387812752 is 257218783.

It is a super-2 number, since 2×387812752² = 300797461227627008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 387812699 and 387812708.

It is not an unprimeable number, because it can be changed into a prime (387812753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126178 + ... + 129214.

Almost surely, 2^387812752 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 387812752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393287328).

387812752 is an abundant number, since it is smaller than the sum of its proper divisors (398761904).

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

387812752 is a wasteful number, since it uses less digits than its factorization.

387812752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3409 counting only the distinct ones).

The product of its digits is 188160, while the sum is 43.

The square root of 387812752 is about 19692.9619915339. The cubic root of 387812752 is about 729.2459543554.

The spelling of 387812752 in words is "three hundred eighty-seven million, eight hundred twelve thousand, seven hundred fifty-two".