28902493620 has 288 divisors, whose sum is σ = 117712707840. Its totient is φ = 5543700480.

The previous prime is 28902493553. The next prime is 28902493637. The reversal of 28902493620 is 2639420982.

28902493620 is a `hidden beast` number, since 289 + 0 + 2 + 4 + 9 + 362 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 99976 + ... + 260384.

It is an arithmetic number, because the mean of its divisors is an integer number (408724680).

Almost surely, 2^28902493620 is an apocalyptic number.

28902493620 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 28902493620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58856353920).

28902493620 is an abundant number, since it is smaller than the sum of its proper divisors (88810214220).

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

28902493620 is a wasteful number, since it uses less digits than its factorization.

28902493620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160455 (or 160450 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 28902493620 in words is "twenty-eight billion, nine hundred two million, four hundred ninety-three thousand, six hundred twenty".