87751422 has 24 divisors (see below), whose sum is σ = 207412920. Its totient is φ = 26591280.

The previous prime is 87751403. The next prime is 87751453. The reversal of 87751422 is 22415778.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221397 + ... + 221792.

It is an arithmetic number, because the mean of its divisors is an integer number (8642205).

Almost surely, 2^87751422 is an apocalyptic number.

87751422 is an abundant number, since it is smaller than the sum of its proper divisors (119661498).

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

87751422 is a wasteful number, since it uses less digits than its factorization.

87751422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443208 (or 443205 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 87751422 is about 9367.5728980350. The cubic root of 87751422 is about 444.3768106296.

The spelling of 87751422 in words is "eighty-seven million, seven hundred fifty-one thousand, four hundred twenty-two".