283172540 has 24 divisors (see below), whose sum is σ = 679614432. Its totient is φ = 97087680.

The previous prime is 283172489. The next prime is 283172543. The reversal of 283172540 is 45271382.

It is a junction number, because it is equal to n+sod(n) for n = 283172497 and 283172506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283172543) 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, 1011191 + ... + 1011470.

It is an arithmetic number, because the mean of its divisors is an integer number (28317268).

Almost surely, 2^283172540 is an apocalyptic number.

283172540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

283172540 is an abundant number, since it is smaller than the sum of its proper divisors (396441892).

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

283172540 is a wasteful number, since it uses less digits than its factorization.

283172540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022677 (or 2022675 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 283172540 is about 16827.7312790524. The cubic root of 283172540 is about 656.6748427897.

The spelling of 283172540 in words is "two hundred eighty-three million, one hundred seventy-two thousand, five hundred forty".