280146672 has 120 divisors (see below), whose sum is σ = 894099024. Its totient is φ = 81119232.

The previous prime is 280146667. The next prime is 280146679. The reversal of 280146672 is 276641082.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280146679) 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 23 ways as a sum of consecutive naturals, for example, 27423 + ... + 36225.

Almost surely, 2^280146672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280146672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (447049512).

280146672 is an abundant number, since it is smaller than the sum of its proper divisors (613952352).

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

280146672 is a wasteful number, since it uses less digits than its factorization.

280146672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847 (or 8838 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 280146672 is about 16737.5826211553. The cubic root of 280146672 is about 654.3274739637.

The spelling of 280146672 in words is "two hundred eighty million, one hundred forty-six thousand, six hundred seventy-two".