87248811 has 24 divisors (see below), whose sum is σ = 133100464. Its totient is φ = 50526720.

The previous prime is 87248773. The next prime is 87248813. The reversal of 87248811 is 11884278.

It is a happy number.

It is not a de Polignac number, because 87248811 - 2¹⁴ = 87232427 is a prime.

It is a super-2 number, since 2×87248811² = 15224710041827442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87248811.

It is not an unprimeable number, because it can be changed into a prime (87248813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7401 + ... + 15141.

Almost surely, 2^87248811 is an apocalyptic number.

87248811 is a deficient number, since it is larger than the sum of its proper divisors (45851653).

87248811 is a wasteful number, since it uses less digits than its factorization.

87248811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7791 (or 7774 counting only the distinct ones).

The product of its digits is 28672, while the sum is 39.

The square root of 87248811 is about 9340.7072002071. The cubic root of 87248811 is about 443.5267713842.

The spelling of 87248811 in words is "eighty-seven million, two hundred forty-eight thousand, eight hundred eleven".