245729428 has 12 divisors (see below), whose sum is σ = 491458912. Its totient is φ = 105312600.

The previous prime is 245729423. The next prime is 245729437. The reversal of 245729428 is 824927542.

It is a happy number.

245729428 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245729423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4387998 + ... + 4388053.

Almost surely, 2^245729428 is an apocalyptic number.

245729428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

245729428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

245729428 is a wasteful number, since it uses less digits than its factorization.

245729428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776062 (or 8776060 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 245729428 is about 15675.7592479599. The cubic root of 245729428 is about 626.3528481303.

The spelling of 245729428 in words is "two hundred forty-five million, seven hundred twenty-nine thousand, four hundred twenty-eight".