87621238 has 16 divisors (see below), whose sum is σ = 136890000. Its totient is φ = 42011872.

The previous prime is 87621211. The next prime is 87621239. The reversal of 87621238 is 83212678.

It is a junction number, because it is equal to n+sod(n) for n = 87621197 and 87621206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87621239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3573 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (8555625).

Almost surely, 2^87621238 is an apocalyptic number.

87621238 is a deficient number, since it is larger than the sum of its proper divisors (49268762).

87621238 is a wasteful number, since it uses less digits than its factorization.

87621238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its digits is 32256, while the sum is 37.

The square root of 87621238 is about 9360.6216673894. The cubic root of 87621238 is about 444.1569494914.

It can be divided in two parts, 8762 and 1238, that added together give a 4-th power (10000 = 10⁴).

The spelling of 87621238 in words is "eighty-seven million, six hundred twenty-one thousand, two hundred thirty-eight".