87249480 has 32 divisors (see below), whose sum is σ = 261748800. Its totient is φ = 23266496.

The previous prime is 87249467. The next prime is 87249497. The reversal of 87249480 is 8494278.

It is a super-2 number, since 2×87249480² = 15224943520540800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363420 + ... + 363659.

It is an arithmetic number, because the mean of its divisors is an integer number (8179650).

Almost surely, 2^87249480 is an apocalyptic number.

It is an amenable number.

87249480 is an abundant number, since it is smaller than the sum of its proper divisors (174499320).

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

87249480 is a wasteful number, since it uses less digits than its factorization.

87249480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727093 (or 727089 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 87249480 is about 9340.7430111314. The cubic root of 87249480 is about 443.5279049953.

The spelling of 87249480 in words is "eighty-seven million, two hundred forty-nine thousand, four hundred eighty".