242628428 has 48 divisors (see below), whose sum is σ = 494249280. Its totient is φ = 102076416.

The previous prime is 242628427. The next prime is 242628431. The reversal of 242628428 is 824826242.

It is a junction number, because it is equal to n+sod(n) for n = 242628391 and 242628400.

It is not an unprimeable number, because it can be changed into a prime (242628427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426128 + ... + 426696.

It is an arithmetic number, because the mean of its divisors is an integer number (10296860).

Almost surely, 2^242628428 is an apocalyptic number.

242628428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

242628428 is an abundant number, since it is smaller than the sum of its proper divisors (251620852).

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

242628428 is a wasteful number, since it uses less digits than its factorization.

242628428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 832 counting only the distinct ones).

The product of its digits is 98304, while the sum is 38.

The square root of 242628428 is about 15576.5345311465. The cubic root of 242628428 is about 623.7069184425.

The spelling of 242628428 in words is "two hundred forty-two million, six hundred twenty-eight thousand, four hundred twenty-eight".