280723972 has 24 divisors (see below), whose sum is σ = 513551360. Its totient is φ = 134110080.

The previous prime is 280723951. The next prime is 280723981. The reversal of 280723972 is 279327082.

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, 4533 + ... + 24124.

Almost surely, 2^280723972 is an apocalyptic number.

It is an amenable number.

280723972 is a deficient number, since it is larger than the sum of its proper divisors (232827388).

280723972 is a wasteful number, since it uses less digits than its factorization.

280723972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28771 (or 28769 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 280723972 is about 16754.8193663793. The cubic root of 280723972 is about 654.7766244891.

The spelling of 280723972 in words is "two hundred eighty million, seven hundred twenty-three thousand, nine hundred seventy-two".