87949240 has 32 divisors (see below), whose sum is σ = 206491680. Its totient is φ = 33649792.

The previous prime is 87949237. The next prime is 87949241. The reversal of 87949240 is 4294978.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87949241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46879 + ... + 48718.

It is an arithmetic number, because the mean of its divisors is an integer number (6452865).

Almost surely, 2^87949240 is an apocalyptic number.

It is an amenable number.

87949240 is an abundant number, since it is smaller than the sum of its proper divisors (118542440).

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

87949240 is a wasteful number, since it uses less digits than its factorization.

87949240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95631 (or 95627 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 87949240 is about 9378.1256122959. The cubic root of 87949240 is about 444.7104795215.

The spelling of 87949240 in words is "eighty-seven million, nine hundred forty-nine thousand, two hundred forty".