1671240020 has 24 divisors (see below), whose sum is σ = 3511154304. Its totient is φ = 668200736.

The previous prime is 1671240017. The next prime is 1671240041. The reversal of 1671240020 is 200421761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31217 + ... + 65703.

It is an arithmetic number, because the mean of its divisors is an integer number (146298096).

Almost surely, 2^1671240020 is an apocalyptic number.

1671240020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1671240020 is an abundant number, since it is smaller than the sum of its proper divisors (1839914284).

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

1671240020 is a wasteful number, since it uses less digits than its factorization.

1671240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36919 (or 36917 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1671240020 is about 40880.8025850765. The cubic root of 1671240020 is about 1186.7145730705.

Adding to 1671240020 its reverse (200421761), we get a palindrome (1871661781).

The spelling of 1671240020 in words is "one billion, six hundred seventy-one million, two hundred forty thousand, twenty".