387750 has 64 divisors (see below), whose sum is σ = 1078272. Its totient is φ = 92000.

The previous prime is 387749. The next prime is 387763. The reversal of 387750 is 57783.

387750 = T₂₆₀ + T₂₆₁ + ... + T₂₇₀.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8227 + ... + 8273.

It is an arithmetic number, because the mean of its divisors is an integer number (16848).

2³⁸⁷⁷⁵⁰ is an apocalyptic number.

387750 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 387750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (539136).

387750 is an abundant number, since it is smaller than the sum of its proper divisors (690522).

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

387750 is a wasteful number, since it uses less digits than its factorization.

387750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 387750 is about 622.6957523542. The cubic root of 387750 is about 72.9206619126.

The spelling of 387750 in words is "three hundred eighty-seven thousand, seven hundred fifty".