65451428 has 48 divisors (see below), whose sum is σ = 145918080. Its totient is φ = 25007616.

The previous prime is 65451427. The next prime is 65451431. The reversal of 65451428 is 82415456.

It is not an unprimeable number, because it can be changed into a prime (65451427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5426 + ... + 12662.

It is an arithmetic number, because the mean of its divisors is an integer number (3039960).

Almost surely, 2^65451428 is an apocalyptic number.

65451428 is a gapful number since it is divisible by the number (68) 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 65451428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72959040).

65451428 is an abundant number, since it is smaller than the sum of its proper divisors (80466652).

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

65451428 is a wasteful number, since it uses less digits than its factorization.

65451428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284 (or 7282 counting only the distinct ones).

The product of its digits is 38400, while the sum is 35.

The square root of 65451428 is about 8090.2056834174. The cubic root of 65451428 is about 403.0012335075.

The spelling of 65451428 in words is "sixty-five million, four hundred fifty-one thousand, four hundred twenty-eight".