387140546 has 32 divisors (see below), whose sum is σ = 664478640. Its totient is φ = 167844096.

The previous prime is 387140543. The next prime is 387140549. The reversal of 387140546 is 645041783.

It is an interprime number because it is at equal distance from previous prime (387140543) and next prime (387140549).

It can be written as a sum of positive squares in 8 ways, for example, as 114725521 + 272415025 = 10711^2 + 16505^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (387140543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20960 + ... + 34836.

Almost surely, 2^387140546 is an apocalyptic number.

387140546 is a deficient number, since it is larger than the sum of its proper divisors (277338094).

387140546 is a wasteful number, since it uses less digits than its factorization.

387140546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13958.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 387140546 is about 19675.8874259841. The cubic root of 387140546 is about 728.8243703100.

The spelling of 387140546 in words is "three hundred eighty-seven million, one hundred forty thousand, five hundred forty-six".