387306340 has 24 divisors (see below), whose sum is σ = 814601592. Its totient is φ = 154682880.

The previous prime is 387306331. The next prime is 387306341. The reversal of 387306340 is 43603783.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116769636 + 270536704 = 10806^2 + 16448^2 .

It is a junction number, because it is equal to n+sod(n) for n = 387306296 and 387306305.

It is not an unprimeable number, because it can be changed into a prime (387306341) 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, 1429 + ... + 27868.

It is an arithmetic number, because the mean of its divisors is an integer number (33941733).

Almost surely, 2^387306340 is an apocalyptic number.

It is an amenable number.

387306340 is an abundant number, since it is smaller than the sum of its proper divisors (427295252).

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

387306340 is a wasteful number, since it uses less digits than its factorization.

387306340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29967 (or 29965 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 387306340 is about 19680.1001013714. The cubic root of 387306340 is about 728.9283958064.

The spelling of 387306340 in words is "three hundred eighty-seven million, three hundred six thousand, three hundred forty".