428061650 has 24 divisors (see below), whose sum is σ = 797440404. Its totient is φ = 170956800.

The previous prime is 428061587. The next prime is 428061709. The reversal of 428061650 is 56160824.

It can be written as a sum of positive squares in 6 ways, for example, as 207331201 + 220730449 = 14399^2 + 14857^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27290 + ... + 40010.

Almost surely, 2^428061650 is an apocalyptic number.

428061650 is a deficient number, since it is larger than the sum of its proper divisors (369378754).

428061650 is a wasteful number, since it uses less digits than its factorization.

428061650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13406 (or 13401 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 428061650 is about 20689.6507945398. The cubic root of 428061650 is about 753.6483865525.

The spelling of 428061650 in words is "four hundred twenty-eight million, sixty-one thousand, six hundred fifty".