1671724040 has 32 divisors (see below), whose sum is σ = 4298719680. Its totient is φ = 573162432.

The previous prime is 1671724031. The next prime is 1671724049. The reversal of 1671724040 is 404271761.

It is an interprime number because it is at equal distance from previous prime (1671724031) and next prime (1671724049).

It is a super-2 number, since 2×1671724040² = 5589322531827843200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1671723988 and 1671724006.

It is not an unprimeable number, because it can be changed into a prime (1671724049) by changing a digit.

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, 2984942 + ... + 2985501.

It is an arithmetic number, because the mean of its divisors is an integer number (134334990).

Almost surely, 2^1671724040 is an apocalyptic number.

1671724040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1671724040 is an abundant number, since it is smaller than the sum of its proper divisors (2626995640).

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

1671724040 is a wasteful number, since it uses less digits than its factorization.

1671724040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970461 (or 5970457 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 1671724040 is about 40886.7220500739. The cubic root of 1671724040 is about 1186.8291263639.

The spelling of 1671724040 in words is "one billion, six hundred seventy-one million, seven hundred twenty-four thousand, forty".