86742740 has 36 divisors (see below), whose sum is σ = 211902516. Its totient is φ = 29740032.

The previous prime is 86742737. The next prime is 86742769. The reversal of 86742740 is 4724768.

It can be written as a sum of positive squares in 2 ways, for example, as 54434884 + 32307856 = 7378^2 + 5684^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86742694 and 86742703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43277 + ... + 45236.

It is an arithmetic number, because the mean of its divisors is an integer number (5886181).

Almost surely, 2^86742740 is an apocalyptic number.

It is an amenable number.

86742740 is an abundant number, since it is smaller than the sum of its proper divisors (125159776).

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

86742740 is a wasteful number, since it uses less digits than its factorization.

86742740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88536 (or 88527 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 86742740 is about 9313.5782597238. The cubic root of 86742740 is about 442.6675756723.

The spelling of 86742740 in words is "eighty-six million, seven hundred forty-two thousand, seven hundred forty".