87247494 has 12 divisors (see below), whose sum is σ = 189036276. Its totient is φ = 29082492.

The previous prime is 87247493. The next prime is 87247529. The reversal of 87247494 is 49474278.

It is a super-2 number, since 2×87247494² = 15224250418560072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87247493) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2423524 + ... + 2423559.

It is an arithmetic number, because the mean of its divisors is an integer number (15753023).

Almost surely, 2^87247494 is an apocalyptic number.

87247494 is an abundant number, since it is smaller than the sum of its proper divisors (101788782).

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

87247494 is a wasteful number, since it uses less digits than its factorization.

87247494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4847091 (or 4847088 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 87247494 is about 9340.6367020669. The cubic root of 87247494 is about 443.5245397294.

The spelling of 87247494 in words is "eighty-seven million, two hundred forty-seven thousand, four hundred ninety-four".