253229780 has 24 divisors (see below), whose sum is σ = 532083552. Its totient is φ = 101234592.

The previous prime is 253229771. The next prime is 253229789. The reversal of 253229780 is 87922352.

It is an interprime number because it is at equal distance from previous prime (253229771) and next prime (253229789).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253229789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61259 + ... + 65261.

It is an arithmetic number, because the mean of its divisors is an integer number (22170148).

Almost surely, 2^253229780 is an apocalyptic number.

253229780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253229780 is an abundant number, since it is smaller than the sum of its proper divisors (278853772).

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

253229780 is a wasteful number, since it uses less digits than its factorization.

253229780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175 (or 7173 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 253229780 is about 15913.1951537081. The cubic root of 253229780 is about 632.6617707623.

The spelling of 253229780 in words is "two hundred fifty-three million, two hundred twenty-nine thousand, seven hundred eighty".