280653045 has 32 divisors (see below), whose sum is σ = 464745600. Its totient is φ = 144528384.

The previous prime is 280653031. The next prime is 280653049. The reversal of 280653045 is 540356082.

It is not a de Polignac number, because 280653045 - 2¹³ = 280644853 is a prime.

It is a super-2 number, since 2×280653045² = 157532263335544050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 280652997 and 280653015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280653049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54961 + ... + 59849.

It is an arithmetic number, because the mean of its divisors is an integer number (14523300).

Almost surely, 2^280653045 is an apocalyptic number.

It is an amenable number.

280653045 is a deficient number, since it is larger than the sum of its proper divisors (184092555).

280653045 is a wasteful number, since it uses less digits than its factorization.

280653045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 280653045 is about 16752.7026177868. The cubic root of 280653045 is about 654.7214751157.

The spelling of 280653045 in words is "two hundred eighty million, six hundred fifty-three thousand, forty-five".