245981976 has 64 divisors (see below), whose sum is σ = 653028480. Its totient is φ = 76945920.

The previous prime is 245981969. The next prime is 245982017. The reversal of 245981976 is 679189542.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189891 + ... + 191181.

It is an arithmetic number, because the mean of its divisors is an integer number (10203570).

Almost surely, 2^245981976 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 245981976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326514240).

245981976 is an abundant number, since it is smaller than the sum of its proper divisors (407046504).

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

245981976 is a wasteful number, since it uses less digits than its factorization.

245981976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1780 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 245981976 is about 15683.8125466992. The cubic root of 245981976 is about 626.5673523516.

The spelling of 245981976 in words is "two hundred forty-five million, nine hundred eighty-one thousand, nine hundred seventy-six".