384247620 has 36 divisors (see below), whose sum is σ = 1165551660. Its totient is φ = 102465984.

The previous prime is 384247603. The next prime is 384247631. The reversal of 384247620 is 26742483.

384247620 is a `hidden beast` number, since 3 + 8 + 4 + 24 + 7 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 140138244 + 244109376 = 11838^2 + 15624^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) 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 (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1067175 + ... + 1067534.

It is an arithmetic number, because the mean of its divisors is an integer number (32376435).

Almost surely, 2^384247620 is an apocalyptic number.

384247620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384247620 is an abundant number, since it is smaller than the sum of its proper divisors (781304040).

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

384247620 is a wasteful number, since it uses less digits than its factorization.

384247620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134724 (or 2134719 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 384247620 is about 19602.2350766437. The cubic root of 384247620 is about 727.0044380769.

It can be divided in two parts, 384 and 247620, that added together give a square (248004 = 498²).

The spelling of 384247620 in words is "three hundred eighty-four million, two hundred forty-seven thousand, six hundred twenty".