380540720 has 40 divisors (see below), whose sum is σ = 1011152544. Its totient is φ = 130470912.

The previous prime is 380540663. The next prime is 380540723. The reversal of 380540720 is 27045083.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×380540720² = 289622479156236800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380540723) 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, 339209 + ... + 340328.

Almost surely, 2^380540720 is an apocalyptic number.

It is an amenable number.

380540720 is an abundant number, since it is smaller than the sum of its proper divisors (630611824).

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

380540720 is a wasteful number, since it uses less digits than its factorization.

380540720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679557 (or 679551 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 380540720 is about 19507.4529347119. The cubic root of 380540720 is about 724.6590358663.

The spelling of 380540720 in words is "three hundred eighty million, five hundred forty thousand, seven hundred twenty".