287923993422 has 32 divisors (see below), whose sum is σ = 620441482752. Its totient is φ = 88549498464.

The previous prime is 287923993417. The next prime is 287923993463. The reversal of 287923993422 is 224399329782.

287923993422 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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, 721578 + ... + 1047149.

It is an arithmetic number, because the mean of its divisors is an integer number (19388796336).

Almost surely, 2^287923993422 is an apocalyptic number.

287923993422 is an abundant number, since it is smaller than the sum of its proper divisors (332517489330).

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

287923993422 is a wasteful number, since it uses less digits than its factorization.

287923993422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770832.

The product of its digits is 23514624, while the sum is 60.

The spelling of 287923993422 in words is "two hundred eighty-seven billion, nine hundred twenty-three million, nine hundred ninety-three thousand, four hundred twenty-two".