281027040 has 96 divisors (see below), whose sum is σ = 1011709440. Its totient is φ = 64233984.

The previous prime is 281027027. The next prime is 281027077. The reversal of 281027040 is 40720182.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×281027040² = 157952394422323200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 281027040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38460 + ... + 45179.

It is an arithmetic number, because the mean of its divisors is an integer number (10538640).

Almost surely, 2^281027040 is an apocalyptic number.

281027040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281027040 is an abundant number, since it is smaller than the sum of its proper divisors (730682400).

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

281027040 is a wasteful number, since it uses less digits than its factorization.

281027040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83664 (or 83656 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 281027040 is about 16763.8611304198. The cubic root of 281027040 is about 655.0121707818.

The spelling of 281027040 in words is "two hundred eighty-one million, twenty-seven thousand, forty".