65228400 has 90 divisors (see below), whose sum is σ = 226373160. Its totient is φ = 17393280.

The previous prime is 65228393. The next prime is 65228407. The reversal of 65228400 is 482256.

65228400 is a `hidden beast` number, since 652 + 2 + 8 + 4 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (65228393) and next prime (65228407).

It is a tau number, because it is divible by the number of its divisors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65228407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5460 + ... + 12659.

Almost surely, 2^65228400 is an apocalyptic number.

65228400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65228400 is an abundant number, since it is smaller than the sum of its proper divisors (161144760).

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

65228400 is a wasteful number, since it uses less digits than its factorization.

65228400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18143 (or 18129 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 65228400 is about 8076.4100935998. The cubic root of 65228400 is about 402.5429657206.

The spelling of 65228400 in words is "sixty-five million, two hundred twenty-eight thousand, four hundred".