253890020 has 24 divisors (see below), whose sum is σ = 536155200. Its totient is φ = 100987232.

The previous prime is 253889959. The next prime is 253890029. The reversal of 253890020 is 20098352.

253890020 = T₁₀₀₇₅ + T₁₀₀₇₆ + ... + T₁₀₀₇₉.

It is not an unprimeable number, because it can be changed into a prime (253890029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31880 + ... + 39039.

It is an arithmetic number, because the mean of its divisors is an integer number (22339800).

Almost surely, 2^253890020 is an apocalyptic number.

253890020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253890020 is an abundant number, since it is smaller than the sum of its proper divisors (282265180).

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

253890020 is a wasteful number, since it uses less digits than its factorization.

253890020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71107 (or 71105 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 253890020 is about 15933.9266974591. The cubic root of 253890020 is about 633.2111349343.

The spelling of 253890020 in words is "two hundred fifty-three million, eight hundred ninety thousand, twenty".