83487390 has 64 divisors (see below), whose sum is σ = 230376960. Its totient is φ = 18967680.

The previous prime is 83487379. The next prime is 83487413. The reversal of 83487390 is 9378438.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36480 + ... + 38700.

It is an arithmetic number, because the mean of its divisors is an integer number (3599640).

Almost surely, 2^83487390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83487390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115188480).

83487390 is an abundant number, since it is smaller than the sum of its proper divisors (146889570).

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

83487390 is a wasteful number, since it uses less digits than its factorization.

83487390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 83487390 is about 9137.1434266952. The cubic root of 83487390 is about 437.0592284625.

The spelling of 83487390 in words is "eighty-three million, four hundred eighty-seven thousand, three hundred ninety".