245972920 has 16 divisors (see below), whose sum is σ = 553439160. Its totient is φ = 98389152.

The previous prime is 245972893. The next prime is 245972921. The reversal of 245972920 is 29279542.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 6149323 = 245972920 / (2 + 4 + 5 + 9 + 7 + 2 + 9 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245972921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3074622 + ... + 3074701.

Almost surely, 2^245972920 is an apocalyptic number.

245972920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245972920 is an abundant number, since it is smaller than the sum of its proper divisors (307466240).

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

245972920 is a wasteful number, since it uses less digits than its factorization.

245972920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6149334 (or 6149330 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 245972920 is about 15683.5238387296. The cubic root of 245972920 is about 626.5596630842.

The spelling of 245972920 in words is "two hundred forty-five million, nine hundred seventy-two thousand, nine hundred twenty".