28862040 has 32 divisors (see below), whose sum is σ = 86586480. Its totient is φ = 7696512.

The previous prime is 28862027. The next prime is 28862087. The reversal of 28862040 is 4026882.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 28861989 and 28862007.

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, 120139 + ... + 120378.

Almost surely, 2^28862040 is an apocalyptic number.

28862040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28862040 is an abundant number, since it is smaller than the sum of its proper divisors (57724440).

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

28862040 is a wasteful number, since it uses less digits than its factorization.

28862040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240531 (or 240527 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28862040 is about 5372.3402721719. The cubic root of 28862040 is about 306.7437161996.

The spelling of 28862040 in words is "twenty-eight million, eight hundred sixty-two thousand, forty".