83278730 has 16 divisors (see below), whose sum is σ = 150067944. Its totient is φ = 33274560.

The previous prime is 83278721. The next prime is 83278763. The reversal of 83278730 is 3787238.

It can be written as a sum of positive squares in 4 ways, for example, as 59552089 + 23726641 = 7717^2 + 4871^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6020 + ... + 14240.

Almost surely, 2^83278730 is an apocalyptic number.

83278730 is a deficient number, since it is larger than the sum of its proper divisors (66789214).

83278730 is a wasteful number, since it uses less digits than its factorization.

83278730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9241.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 83278730 is about 9125.7180539396. The cubic root of 83278730 is about 436.6948107131.

The spelling of 83278730 in words is "eighty-three million, two hundred seventy-eight thousand, seven hundred thirty".