87422072 has 8 divisors (see below), whose sum is σ = 163916400. Its totient is φ = 43711032.

The previous prime is 87422051. The next prime is 87422081. The reversal of 87422072 is 27022478.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5463872 + ... + 5463887.

It is an arithmetic number, because the mean of its divisors is an integer number (20489550).

Almost surely, 2^87422072 is an apocalyptic number.

It is an amenable number.

87422072 is a deficient number, since it is larger than the sum of its proper divisors (76494328).

87422072 is a wasteful number, since it uses less digits than its factorization.

87422072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10927765 (or 10927761 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 87422072 is about 9349.9771122715. The cubic root of 87422072 is about 443.8201663297.

The spelling of 87422072 in words is "eighty-seven million, four hundred twenty-two thousand, seventy-two".