87403472 has 80 divisors (see below), whose sum is σ = 192560592. Its totient is φ = 38154240.

The previous prime is 87403469. The next prime is 87403483. The reversal of 87403472 is 27430478.

It can be written as a sum of positive squares in 8 ways, for example, as 15085456 + 72318016 = 3884^2 + 8504^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315398 + ... + 315674.

Almost surely, 2^87403472 is an apocalyptic number.

87403472 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87403472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96280296).

87403472 is an abundant number, since it is smaller than the sum of its proper divisors (105157120).

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

87403472 is a wasteful number, since it uses less digits than its factorization.

87403472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 87403472 is about 9348.9824045187. The cubic root of 87403472 is about 443.7886882357.

The spelling of 87403472 in words is "eighty-seven million, four hundred three thousand, four hundred seventy-two".