28980435 has 64 divisors (see below), whose sum is σ = 53581824. Its totient is φ = 13248000.

The previous prime is 28980433. The next prime is 28980449. The reversal of 28980435 is 53408982.

It is a happy number.

It is not a de Polignac number, because 28980435 - 2¹ = 28980433 is a prime.

It is a super-2 number, since 2×28980435² = 1679731225578450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28980393 and 28980402.

It is not an unprimeable number, because it can be changed into a prime (28980431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 286885 + ... + 286985.

It is an arithmetic number, because the mean of its divisors is an integer number (837216).

Almost surely, 2^28980435 is an apocalyptic number.

28980435 is a deficient number, since it is larger than the sum of its proper divisors (24601389).

28980435 is a wasteful number, since it uses less digits than its factorization.

28980435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 28980435 is about 5383.3479359967. The cubic root of 28980435 is about 307.1625752105.

The spelling of 28980435 in words is "twenty-eight million, nine hundred eighty thousand, four hundred thirty-five".