238703664 has 80 divisors (see below), whose sum is σ = 668207232. Its totient is φ = 73135104.

The previous prime is 238703657. The next prime is 238703677. The reversal of 238703664 is 466307832.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31687 + ... + 38489.

Almost surely, 2^238703664 is an apocalyptic number.

238703664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238703664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334103616).

238703664 is an abundant number, since it is smaller than the sum of its proper divisors (429503568).

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

238703664 is a wasteful number, since it uses less digits than its factorization.

238703664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874 (or 6868 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 238703664 is about 15450.0376698570. The cubic root of 238703664 is about 620.3255868824.

The spelling of 238703664 in words is "two hundred thirty-eight million, seven hundred three thousand, six hundred sixty-four".