3144697920 has 672 divisors, whose sum is σ = 13579937280. Its totient is φ = 654151680.

The previous prime is 3144697883. The next prime is 3144697943. The reversal of 3144697920 is 297964413.

It is a happy number.

3144697920 is a `hidden beast` number, since 31 + 446 + 97 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44291485 + ... + 44291555.

It is an arithmetic number, because the mean of its divisors is an integer number (20208240).

Almost surely, 2^3144697920 is an apocalyptic number.

3144697920 is a gapful number since it is divisible by the number (30) 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 3144697920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6789968640).

3144697920 is an abundant number, since it is smaller than the sum of its proper divisors (10435239360).

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

3144697920 is a wasteful number, since it uses less digits than its factorization.

3144697920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 3144697920 is about 56077.6062256584. The cubic root of 3144697920 is about 1465.0742809273.

The spelling of 3144697920 in words is "three billion, one hundred forty-four million, six hundred ninety-seven thousand, nine hundred twenty".