387441240 has 64 divisors (see below), whose sum is σ = 1167233760. Its totient is φ = 102881280.

The previous prime is 387441221. The next prime is 387441251. The reversal of 387441240 is 42144783.

It is a super-2 number, since 2×387441240² = 300221428905475200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22222 + ... + 35618.

Almost surely, 2^387441240 is an apocalyptic number.

387441240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387441240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583616880).

387441240 is an abundant number, since it is smaller than the sum of its proper divisors (779792520).

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

387441240 is a wasteful number, since it uses less digits than its factorization.

387441240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13652 (or 13648 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 387441240 is about 19683.5271229523. The cubic root of 387441240 is about 729.0130153234.

The spelling of 387441240 in words is "three hundred eighty-seven million, four hundred forty-one thousand, two hundred forty".