245627820 has 72 divisors (see below), whose sum is σ = 784296240. Its totient is φ = 62052480.

The previous prime is 245627803. The next prime is 245627821. The reversal of 245627820 is 28726542.

245627820 is a `hidden beast` number, since 2 + 4 + 5 + 627 + 8 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (245627821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32491 + ... + 39330.

Almost surely, 2^245627820 is an apocalyptic number.

245627820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245627820 is an abundant number, since it is smaller than the sum of its proper divisors (538668420).

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

245627820 is a wasteful number, since it uses less digits than its factorization.

245627820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71855 (or 71850 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 245627820 is about 15672.5179853143. The cubic root of 245627820 is about 626.2665048777.

It can be divided in two parts, 2456 and 27820, that added together give a square (30276 = 174²).

The spelling of 245627820 in words is "two hundred forty-five million, six hundred twenty-seven thousand, eight hundred twenty".