84069280 has 24 divisors (see below), whose sum is σ = 198614052. Its totient is φ = 33627648.

The previous prime is 84069247. The next prime is 84069287. The reversal of 84069280 is 8296048.

It can be written as a sum of positive squares in 2 ways, for example, as 78925456 + 5143824 = 8884^2 + 2268^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84069287) 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, 262557 + ... + 262876.

Almost surely, 2^84069280 is an apocalyptic number.

84069280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84069280 is an abundant number, since it is smaller than the sum of its proper divisors (114544772).

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

84069280 is a wasteful number, since it uses less digits than its factorization.

84069280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525448 (or 525440 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 84069280 is about 9168.9301447879. The cubic root of 84069280 is about 438.0722829212.

The spelling of 84069280 in words is "eighty-four million, sixty-nine thousand, two hundred eighty".