245979828 has 60 divisors (see below), whose sum is σ = 658759332. Its totient is φ = 79989120.

The previous prime is 245979763. The next prime is 245979841. The reversal of 245979828 is 828979542.

245979828 is a `hidden beast` number, since 24 + 597 + 9 + 8 + 28 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35497764 + 210482064 = 5958^2 + 14508^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4026 + ... + 22542.

Almost surely, 2^245979828 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 245979828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329379666).

245979828 is an abundant number, since it is smaller than the sum of its proper divisors (412779504).

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

245979828 is a wasteful number, since it uses less digits than its factorization.

245979828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18574 (or 18563 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 245979828 is about 15683.7440683021. The cubic root of 245979828 is about 626.5655285451.

The spelling of 245979828 in words is "two hundred forty-five million, nine hundred seventy-nine thousand, eight hundred twenty-eight".