464128240 has 40 divisors (see below), whose sum is σ = 1104201648. Its totient is φ = 181332480.

The previous prime is 464128183. The next prime is 464128307. The reversal of 464128240 is 42821464.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 64021 + ... + 70900.

Almost surely, 2^464128240 is an apocalyptic number.

464128240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

464128240 is an abundant number, since it is smaller than the sum of its proper divisors (640073408).

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

464128240 is a wasteful number, since it uses less digits than its factorization.

464128240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134977 (or 134971 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 464128240 is about 21543.6357191631. The cubic root of 464128240 is about 774.2466435703.

The spelling of 464128240 in words is "four hundred sixty-four million, one hundred twenty-eight thousand, two hundred forty".