84074040 has 96 divisors (see below), whose sum is σ = 274388400. Its totient is φ = 22325760.

The previous prime is 84074033. The next prime is 84074047. The reversal of 84074040 is 4047048.

It is an interprime number because it is at equal distance from previous prime (84074033) and next prime (84074047).

It is a junction number, because it is equal to n+sod(n) for n = 84073995 and 84074013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84074047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146955 + ... + 147525.

Almost surely, 2^84074040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84074040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137194200).

84074040 is an abundant number, since it is smaller than the sum of its proper divisors (190314360).

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

84074040 is a wasteful number, since it uses less digits than its factorization.

84074040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 84074040 is about 9169.1897133825. The cubic root of 84074040 is about 438.0805506448.

The spelling of 84074040 in words is "eighty-four million, seventy-four thousand, forty".