87247290436 has 12 divisors (see below), whose sum is σ = 152691916860. Its totient is φ = 43621028480.

The previous prime is 87247290409. The next prime is 87247290451. The reversal of 87247290436 is 63409274278.

It can be written as a sum of positive squares in 2 ways, for example, as 7875497536 + 79371792900 = 88744^2 + 281730^2 .

It is a super-2 number, since 2×87247290436² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578185 + ... + 713296.

It is an arithmetic number, because the mean of its divisors is an integer number (12724326405).

Almost surely, 2^87247290436 is an apocalyptic number.

It is an amenable number.

87247290436 is a deficient number, since it is larger than the sum of its proper divisors (65444626424).

87247290436 is a wasteful number, since it uses less digits than its factorization.

87247290436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308374 (or 1308372 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 87247290436 in words is "eighty-seven billion, two hundred forty-seven million, two hundred ninety thousand, four hundred thirty-six".