387905760 has 288 divisors, whose sum is σ = 1499202432. Its totient is φ = 93934080.

The previous prime is 387905753. The next prime is 387905783. The reversal of 387905760 is 67509783.

It is a happy number.

387905760 is a `hidden beast` number, since 3 + 8 + 79 + 0 + 576 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 427227 + ... + 428133.

It is an arithmetic number, because the mean of its divisors is an integer number (5205564).

Almost surely, 2^387905760 is an apocalyptic number.

387905760 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387905760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749601216).

387905760 is an abundant number, since it is smaller than the sum of its proper divisors (1111296672).

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

387905760 is a wasteful number, since it uses less digits than its factorization.

387905760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 387905760 is about 19695.3233027539. The cubic root of 387905760 is about 729.3042473382.

The spelling of 387905760 in words is "three hundred eighty-seven million, nine hundred five thousand, seven hundred sixty".