847540 has 24 divisors (see below), whose sum is σ = 1838592. Its totient is φ = 327840.

The previous prime is 847537. The next prime is 847543. The reversal of 847540 is 45748.

It is an interprime number because it is at equal distance from previous prime (847537) and next prime (847543).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 847499 and 847508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847543) 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, 64 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (76608).

2⁸⁴⁷⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

847540 is an abundant number, since it is smaller than the sum of its proper divisors (991052).

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

847540 is a wasteful number, since it uses less digits than its factorization.

847540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 847540 is about 920.6193567376. The cubic root of 847540 is about 94.6353518943.

It can be divided in two parts, 8475 and 40, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 847540 in words is "eight hundred forty-seven thousand, five hundred forty".