84507390 has 48 divisors (see below), whose sum is σ = 239696496. Its totient is φ = 20486400.

The previous prime is 84507347. The next prime is 84507461. The reversal of 84507390 is 9370548.

It is a super-2 number, since 2×84507390² = 14282997929224200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41691 + ... + 43670.

It is an arithmetic number, because the mean of its divisors is an integer number (4993677).

Almost surely, 2^84507390 is an apocalyptic number.

84507390 is an abundant number, since it is smaller than the sum of its proper divisors (155189106).

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

84507390 is a wasteful number, since it uses less digits than its factorization.

84507390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85385 (or 85382 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 84507390 is about 9192.7901096457. The cubic root of 84507390 is about 438.8319397940.

The spelling of 84507390 in words is "eighty-four million, five hundred seven thousand, three hundred ninety".