64328394 has 16 divisors (see below), whose sum is σ = 138553632. Its totient is φ = 19793328.

The previous prime is 64328393. The next prime is 64328413. The reversal of 64328394 is 49382346.

Added to its reverse (49382346) it gives a triangular number (113710740 = T₁₅₀₈₀).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (64328393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412284 + ... + 412439.

It is an arithmetic number, because the mean of its divisors is an integer number (8659602).

Almost surely, 2^64328394 is an apocalyptic number.

64328394 is an abundant number, since it is smaller than the sum of its proper divisors (74225238).

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

64328394 is a wasteful number, since it uses less digits than its factorization.

64328394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824741.

The product of its digits is 124416, while the sum is 39.

The square root of 64328394 is about 8020.4983635682. The cubic root of 64328394 is about 400.6829873237.

Adding to 64328394 its reverse (49382346), we get a triangular number (113710740 = T₁₅₀₈₀).

The spelling of 64328394 in words is "sixty-four million, three hundred twenty-eight thousand, three hundred ninety-four".