1490640288 has 48 divisors (see below), whose sum is σ = 4118879520. Its totient is φ = 470727936.

The previous prime is 1490640287. The next prime is 1490640293. The reversal of 1490640288 is 8820460941.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1490640287) 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, 406795 + ... + 410442.

It is an arithmetic number, because the mean of its divisors is an integer number (85809990).

Almost surely, 2^1490640288 is an apocalyptic number.

It is an amenable number.

1490640288 is an abundant number, since it is smaller than the sum of its proper divisors (2628239232).

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

1490640288 is a wasteful number, since it uses less digits than its factorization.

1490640288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817269 (or 817261 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1490640288 is about 38608.8110151038. The cubic root of 1490640288 is about 1142.3283407648.

The spelling of 1490640288 in words is "one billion, four hundred ninety million, six hundred forty thousand, two hundred eighty-eight".