87400436 has 12 divisors (see below), whose sum is σ = 153744612. Its totient is φ = 43473408.

The previous prime is 87400427. The next prime is 87400447. The reversal of 87400436 is 63400478.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18011536 + 69388900 = 4244^2 + 8330^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 55835 + ... + 57378.

It is an arithmetic number, because the mean of its divisors is an integer number (12812051).

Almost surely, 2^87400436 is an apocalyptic number.

It is an amenable number.

87400436 is a deficient number, since it is larger than the sum of its proper divisors (66344176).

87400436 is a wasteful number, since it uses less digits than its factorization.

87400436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113410 (or 113408 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 87400436 is about 9348.8200324961. The cubic root of 87400436 is about 443.7835497745.

The spelling of 87400436 in words is "eighty-seven million, four hundred thousand, four hundred thirty-six".