87725740 has 24 divisors (see below), whose sum is σ = 184669632. Its totient is φ = 35005440.

The previous prime is 87725731. The next prime is 87725741. The reversal of 87725740 is 4752778.

It is a junction number, because it is equal to n+sod(n) for n = 87725693 and 87725702.

It is not an unprimeable number, because it can be changed into a prime (87725741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3532 + ... + 13708.

It is an arithmetic number, because the mean of its divisors is an integer number (7694568).

Almost surely, 2^87725740 is an apocalyptic number.

It is an amenable number.

87725740 is an abundant number, since it is smaller than the sum of its proper divisors (96943892).

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

87725740 is a wasteful number, since it uses less digits than its factorization.

87725740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10617 (or 10615 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 87725740 is about 9366.2020050819. The cubic root of 87725740 is about 444.3334548315. Note that the first 3 decimals are identical.

The spelling of 87725740 in words is "eighty-seven million, seven hundred twenty-five thousand, seven hundred forty".