87639150 has 24 divisors (see below), whose sum is σ = 217345464. Its totient is φ = 23370400.

The previous prime is 87639143. The next prime is 87639151. The reversal of 87639150 is 5193678.

It is a super-2 number, since 2×87639150² = 15361241225445000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87639099 and 87639108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87639151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291981 + ... + 292280.

It is an arithmetic number, because the mean of its divisors is an integer number (9056061).

Almost surely, 2^87639150 is an apocalyptic number.

87639150 is an abundant number, since it is smaller than the sum of its proper divisors (129706314).

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

87639150 is a wasteful number, since it uses less digits than its factorization.

87639150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584276 (or 584271 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 87639150 is about 9361.5783925575. The cubic root of 87639150 is about 444.1872130721.

The spelling of 87639150 in words is "eighty-seven million, six hundred thirty-nine thousand, one hundred fifty".