387467640 has 96 divisors (see below), whose sum is σ = 1439174880. Its totient is φ = 88563456.

The previous prime is 387467609. The next prime is 387467657. The reversal of 387467640 is 46764783.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74359 + ... + 79398.

It is an arithmetic number, because the mean of its divisors is an integer number (14991405).

Almost surely, 2^387467640 is an apocalyptic number.

387467640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387467640 is an abundant number, since it is smaller than the sum of its proper divisors (1051707240).

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

387467640 is a wasteful number, since it uses less digits than its factorization.

387467640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153781 (or 153774 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 387467640 is about 19684.1977230468. The cubic root of 387467640 is about 729.0295731086.

The spelling of 387467640 in words is "three hundred eighty-seven million, four hundred sixty-seven thousand, six hundred forty".