387540390 has 16 divisors (see below), whose sum is σ = 930097008. Its totient is φ = 103344096.

The previous prime is 387540383. The next prime is 387540401. The reversal of 387540390 is 93045783.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6458977 + ... + 6459036.

It is an arithmetic number, because the mean of its divisors is an integer number (58131063).

Almost surely, 2^387540390 is an apocalyptic number.

387540390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

387540390 is an abundant number, since it is smaller than the sum of its proper divisors (542556618).

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

387540390 is a wasteful number, since it uses less digits than its factorization.

387540390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12918023.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 387540390 is about 19686.0455653237. The cubic root of 387540390 is about 729.0751972047.

The spelling of 387540390 in words is "three hundred eighty-seven million, five hundred forty thousand, three hundred ninety".