83457388 has 48 divisors (see below), whose sum is σ = 173376000. Its totient is φ = 35127120.

The previous prime is 83457377. The next prime is 83457397. The reversal of 83457388 is 88375438.

It is a super-2 number, since 2×83457388² = 13930271223565088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80433 + ... + 81463.

It is an arithmetic number, because the mean of its divisors is an integer number (3612000).

Almost surely, 2^83457388 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 83457388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86688000).

83457388 is an abundant number, since it is smaller than the sum of its proper divisors (89918612).

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

83457388 is a wasteful number, since it uses less digits than its factorization.

83457388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1099 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 83457388 is about 9135.5015188002. The cubic root of 83457388 is about 437.0068683716.

It can be divided in two parts, 83457 and 388, that added together give a triangular number (83845 = T₄₀₉).

The spelling of 83457388 in words is "eighty-three million, four hundred fifty-seven thousand, three hundred eighty-eight".