28433634 has 32 divisors (see below), whose sum is σ = 59719680. Its totient is φ = 9013200.

The previous prime is 28433617. The next prime is 28433663. The reversal of 28433634 is 43633482.

28433634 = 665² + 666² + ... + 723².

It is a super-3 number, since 3×28433634³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28433595 and 28433604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9679 + ... + 12269.

It is an arithmetic number, because the mean of its divisors is an integer number (1866240).

Almost surely, 2^28433634 is an apocalyptic number.

28433634 is an abundant number, since it is smaller than the sum of its proper divisors (31286046).

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

28433634 is a wasteful number, since it uses less digits than its factorization.

28433634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686.

The product of its digits is 41472, while the sum is 33.

The square root of 28433634 is about 5332.3197578540. The cubic root of 28433634 is about 305.2184549795.

The spelling of 28433634 in words is "twenty-eight million, four hundred thirty-three thousand, six hundred thirty-four".