387311380 has 12 divisors (see below), whose sum is σ = 813353940. Its totient is φ = 154924544.

The previous prime is 387311377. The next prime is 387311411. The reversal of 387311380 is 83113783.

It can be written as a sum of positive squares in 2 ways, for example, as 62663056 + 324648324 = 7916^2 + 18018^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9682765 + ... + 9682804.

It is an arithmetic number, because the mean of its divisors is an integer number (67779495).

Almost surely, 2^387311380 is an apocalyptic number.

It is an amenable number.

387311380 is an abundant number, since it is smaller than the sum of its proper divisors (426042560).

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

387311380 is a wasteful number, since it uses less digits than its factorization.

387311380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19365578 (or 19365576 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 387311380 is about 19680.2281490840. The cubic root of 387311380 is about 728.9315576302.

The spelling of 387311380 in words is "three hundred eighty-seven million, three hundred eleven thousand, three hundred eighty".