28963404 has 36 divisors (see below), whose sum is σ = 73393320. Its totient is φ = 9630720.

The previous prime is 28963379. The next prime is 28963409. The reversal of 28963404 is 40436982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28963409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19852 + ... + 21260.

Almost surely, 2^28963404 is an apocalyptic number.

It is an amenable number.

28963404 is an abundant number, since it is smaller than the sum of its proper divisors (44429916).

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

28963404 is a wasteful number, since it uses less digits than its factorization.

28963404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1985 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 28963404 is about 5381.7658811955. The cubic root of 28963404 is about 307.1023931035.

The spelling of 28963404 in words is "twenty-eight million, nine hundred sixty-three thousand, four hundred four".