87743442 has 8 divisors (see below), whose sum is σ = 175486896. Its totient is φ = 29247812.

The previous prime is 87743441. The next prime is 87743449. The reversal of 87743442 is 24434778.

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

87743442 is an admirable number.

It is a super-2 number, since 2×87743442² = 15397823228014728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87743442.

It is not an unprimeable number, because it can be changed into a prime (87743441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7311948 + ... + 7311959.

It is an arithmetic number, because the mean of its divisors is an integer number (21935862).

Almost surely, 2^87743442 is an apocalyptic number.

87743442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87743442 is a wasteful number, since it uses less digits than its factorization.

87743442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14623912.

The product of its digits is 150528, while the sum is 39.

The square root of 87743442 is about 9367.1469509131. The cubic root of 87743442 is about 444.3633398718.

The spelling of 87743442 in words is "eighty-seven million, seven hundred forty-three thousand, four hundred forty-two".