83072520 has 64 divisors (see below), whose sum is σ = 276912000. Its totient is φ = 22152384.

The previous prime is 83072513. The next prime is 83072533. The reversal of 83072520 is 2527038.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 37380 + ... + 39539.

It is an arithmetic number, because the mean of its divisors is an integer number (4326750).

Almost surely, 2^83072520 is an apocalyptic number.

It is an amenable number.

83072520 is an abundant number, since it is smaller than the sum of its proper divisors (193839480).

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

83072520 is a wasteful number, since it uses less digits than its factorization.

83072520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76939 (or 76929 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 83072520 is about 9114.4127622135. The cubic root of 83072520 is about 436.3340732813.

Adding to 83072520 its reverse (2527038), we get a palindrome (85599558).

The spelling of 83072520 in words is "eighty-three million, seventy-two thousand, five hundred twenty".