380987280 has 80 divisors (see below), whose sum is σ = 1312296960. Its totient is φ = 101596032.

The previous prime is 380987279. The next prime is 380987281. The reversal of 380987280 is 82789083.

It is an interprime number because it is at equal distance from previous prime (380987279) and next prime (380987281).

It is a tau number, because it is divible by the number of its divisors (80).

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

It is not an unprimeable number, because it can be changed into a prime (380987281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86032 + ... + 90351.

It is an arithmetic number, because the mean of its divisors is an integer number (16403712).

Almost surely, 2^380987280 is an apocalyptic number.

380987280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

380987280 is an abundant number, since it is smaller than the sum of its proper divisors (931309680).

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

380987280 is a wasteful number, since it uses less digits than its factorization.

380987280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176405 (or 176393 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 380987280 is about 19518.8954605531. The cubic root of 380987280 is about 724.9423846406.

The spelling of 380987280 in words is "three hundred eighty million, nine hundred eighty-seven thousand, two hundred eighty".