387623540 has 12 divisors (see below), whose sum is σ = 814009476. Its totient is φ = 155049408.

The previous prime is 387623539. The next prime is 387623549. The reversal of 387623540 is 45326783.

It can be written as a sum of positive squares in 2 ways, for example, as 203804176 + 183819364 = 14276^2 + 13558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 387623494 and 387623503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387623549) 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, 9690569 + ... + 9690608.

It is an arithmetic number, because the mean of its divisors is an integer number (67834123).

Almost surely, 2^387623540 is an apocalyptic number.

It is an amenable number.

387623540 is an abundant number, since it is smaller than the sum of its proper divisors (426385936).

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

387623540 is a wasteful number, since it uses less digits than its factorization.

387623540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19381186 (or 19381184 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 387623540 is about 19688.1573541050. The cubic root of 387623540 is about 729.1273365163.

The spelling of 387623540 in words is "three hundred eighty-seven million, six hundred twenty-three thousand, five hundred forty".