387530070 has 64 divisors (see below), whose sum is σ = 973762560. Its totient is φ = 98582400.

The previous prime is 387530057. The next prime is 387530081. The reversal of 387530070 is 70035783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63096 + ... + 68964.

It is an arithmetic number, because the mean of its divisors is an integer number (15215040).

Almost surely, 2^387530070 is an apocalyptic number.

387530070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 387530070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486881280).

387530070 is an abundant number, since it is smaller than the sum of its proper divisors (586232490).

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

387530070 is a wasteful number, since it uses less digits than its factorization.

387530070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 387530070 is about 19685.7834489766. The cubic root of 387530070 is about 729.0687255155.

The spelling of 387530070 in words is "three hundred eighty-seven million, five hundred thirty thousand, seventy".