84780744 has 16 divisors (see below), whose sum is σ = 211951920. Its totient is φ = 28260240.

The previous prime is 84780739. The next prime is 84780749. The reversal of 84780744 is 44708748.

It is an interprime number because it is at equal distance from previous prime (84780739) and next prime (84780749).

It is a junction number, because it is equal to n+sod(n) for n = 84780696 and 84780705.

It is not an unprimeable number, because it can be changed into a prime (84780749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1766242 + ... + 1766289.

It is an arithmetic number, because the mean of its divisors is an integer number (13246995).

Almost surely, 2^84780744 is an apocalyptic number.

It is an amenable number.

84780744 is an abundant number, since it is smaller than the sum of its proper divisors (127171176).

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

84780744 is a wasteful number, since it uses less digits than its factorization.

84780744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532540 (or 3532536 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 84780744 is about 9207.6459532282. The cubic root of 84780744 is about 439.3045902052.

The spelling of 84780744 in words is "eighty-four million, seven hundred eighty thousand, seven hundred forty-four".