28377012 has 48 divisors (see below), whose sum is σ = 70785792. Its totient is φ = 8816640.

The previous prime is 28377001. The next prime is 28377023. The reversal of 28377012 is 21077382.

It is an interprime number because it is at equal distance from previous prime (28377001) and next prime (28377023).

It is a congruent number.

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, 22437 + ... + 23667.

It is an arithmetic number, because the mean of its divisors is an integer number (1474704).

Almost surely, 2^28377012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28377012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35392896).

28377012 is an abundant number, since it is smaller than the sum of its proper divisors (42408780).

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

28377012 is a wasteful number, since it uses less digits than its factorization.

28377012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368 (or 1366 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 28377012 is about 5327.0077904955. The cubic root of 28377012 is about 305.0157189785.

The spelling of 28377012 in words is "twenty-eight million, three hundred seventy-seven thousand, twelve".