280748942 has 8 divisors (see below), whose sum is σ = 435645000. Its totient is φ = 135533944.

The previous prime is 280748939. The next prime is 280748957. The reversal of 280748942 is 249847082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 280748893 and 280748902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420192 + ... + 2420307.

It is an arithmetic number, because the mean of its divisors is an integer number (54455625).

Almost surely, 2^280748942 is an apocalyptic number.

280748942 is a deficient number, since it is larger than the sum of its proper divisors (154896058).

280748942 is a wasteful number, since it uses less digits than its factorization.

280748942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840530.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 280748942 is about 16755.5645085446. The cubic root of 280748942 is about 654.7960377315.

The spelling of 280748942 in words is "two hundred eighty million, seven hundred forty-eight thousand, nine hundred forty-two".