289274420 has 24 divisors (see below), whose sum is σ = 628425000. Its totient is φ = 111719552.

The previous prime is 289274417. The next prime is 289274497. The reversal of 289274420 is 24472982.

It can be written as a sum of positive squares in 4 ways, for example, as 682276 + 288592144 = 826^2 + 16988^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248795 + ... + 249954.

It is an arithmetic number, because the mean of its divisors is an integer number (26184375).

Almost surely, 2^289274420 is an apocalyptic number.

289274420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289274420 is an abundant number, since it is smaller than the sum of its proper divisors (339150580).

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

289274420 is a wasteful number, since it uses less digits than its factorization.

289274420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498787 (or 498785 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 289274420 is about 17008.0692613830. The cubic root of 289274420 is about 661.3581003297.

The spelling of 289274420 in words is "two hundred eighty-nine million, two hundred seventy-four thousand, four hundred twenty".