28049700 has 216 divisors, whose sum is σ = 100535232. Its totient is φ = 5909760.

The previous prime is 28049689. The next prime is 28049759. The reversal of 28049700 is 794082.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 758082 + ... + 758118.

Almost surely, 2^28049700 is an apocalyptic number.

28049700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28049700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50267616).

28049700 is an abundant number, since it is smaller than the sum of its proper divisors (72485532).

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

28049700 is a wasteful number, since it uses less digits than its factorization.

28049700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 28049700 is about 5296.1967486112. The cubic root of 28049700 is about 303.8384558381.

The spelling of 28049700 in words is "twenty-eight million, forty-nine thousand, seven hundred".