387020517 has 32 divisors (see below), whose sum is σ = 583661568. Its totient is φ = 226328256.

The previous prime is 387020509. The next prime is 387020531. The reversal of 387020517 is 715020783.

It is not a de Polignac number, because 387020517 - 2³ = 387020509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387020537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144888 + ... + 147534.

It is an arithmetic number, because the mean of its divisors is an integer number (18239424).

Almost surely, 2^387020517 is an apocalyptic number.

It is an amenable number.

387020517 is a deficient number, since it is larger than the sum of its proper divisors (196641051).

387020517 is a wasteful number, since it uses less digits than its factorization.

387020517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 387020517 is about 19672.8370348560. The cubic root of 387020517 is about 728.7490409896.

The spelling of 387020517 in words is "three hundred eighty-seven million, twenty thousand, five hundred seventeen".