87402136 has 16 divisors (see below), whose sum is σ = 166188240. Its totient is φ = 43085280.

The previous prime is 87402127. The next prime is 87402137. The reversal of 87402136 is 63120478.

It is a junction number, because it is equal to n+sod(n) for n = 87402098 and 87402107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87402137) 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 3 ways as a sum of consecutive naturals, for example, 76371 + ... + 77506.

It is an arithmetic number, because the mean of its divisors is an integer number (10386765).

Almost surely, 2^87402136 is an apocalyptic number.

It is an amenable number.

87402136 is a deficient number, since it is larger than the sum of its proper divisors (78786104).

87402136 is a wasteful number, since it uses less digits than its factorization.

87402136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153954 (or 153950 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 87402136 is about 9348.9109526190. The cubic root of 87402136 is about 443.7864270566.

The spelling of 87402136 in words is "eighty-seven million, four hundred two thousand, one hundred thirty-six".