87724090 has 16 divisors (see below), whose sum is σ = 161263872. Its totient is φ = 34342864.

The previous prime is 87724069. The next prime is 87724099. The reversal of 87724090 is 9042778.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87724099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92854 + ... + 93793.

It is an arithmetic number, because the mean of its divisors is an integer number (10078992).

Almost surely, 2^87724090 is an apocalyptic number.

87724090 is a deficient number, since it is larger than the sum of its proper divisors (73539782).

87724090 is a wasteful number, since it uses less digits than its factorization.

87724090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186701.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87724090 is about 9366.1139220063. The cubic root of 87724090 is about 444.3306690479.

The spelling of 87724090 in words is "eighty-seven million, seven hundred twenty-four thousand, ninety".