380515840 has 40 divisors (see below), whose sum is σ = 912352320. Its totient is φ = 152205312.

The previous prime is 380515823. The next prime is 380515843. The reversal of 380515840 is 48515083.

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

It is a junction number, because it is equal to n+sod(n) for n = 380515796 and 380515805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380515843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71760 + ... + 76879.

It is an arithmetic number, because the mean of its divisors is an integer number (22808808).

Almost surely, 2^380515840 is an apocalyptic number.

It is an amenable number.

380515840 is an abundant number, since it is smaller than the sum of its proper divisors (531836480).

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

380515840 is an equidigital number, since it uses as much as digits as its factorization.

380515840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148662 (or 148646 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 380515840 is about 19506.8152193022. The cubic root of 380515840 is about 724.6432426289.

The spelling of 380515840 in words is "three hundred eighty million, five hundred fifteen thousand, eight hundred forty".