387047340 has 144 divisors (see below), whose sum is σ = 1238328000. Its totient is φ = 97703424.

The previous prime is 387047333. The next prime is 387047351. The reversal of 387047340 is 43740783.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 387047295 and 387047304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275961 + ... + 277359.

It is an arithmetic number, because the mean of its divisors is an integer number (8599500).

Almost surely, 2^387047340 is an apocalyptic number.

387047340 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 387047340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619164000).

387047340 is an abundant number, since it is smaller than the sum of its proper divisors (851280660).

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

387047340 is a wasteful number, since it uses less digits than its factorization.

387047340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 387047340 is about 19673.5187498322. The cubic root of 387047340 is about 728.7658762589.

The spelling of 387047340 in words is "three hundred eighty-seven million, forty-seven thousand, three hundred forty".