28495740 has 192 divisors, whose sum is σ = 104315904. Its totient is φ = 5640192.

The previous prime is 28495739. The next prime is 28495741. The reversal of 28495740 is 4759482.

It is an interprime number because it is at equal distance from previous prime (28495739) and next prime (28495741).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 92667 + ... + 92973.

It is an arithmetic number, because the mean of its divisors is an integer number (543312).

Almost surely, 2^28495740 is an apocalyptic number.

28495740 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 28495740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52157952).

28495740 is an abundant number, since it is smaller than the sum of its proper divisors (75820164).

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

28495740 is a wasteful number, since it uses less digits than its factorization.

28495740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28495740 is about 5338.1401255493. The cubic root of 28495740 is about 305.4405172580.

The spelling of 28495740 in words is "twenty-eight million, four hundred ninety-five thousand, seven hundred forty".