285402480 has 80 divisors (see below), whose sum is σ = 965188224. Its totient is φ = 69187840.

The previous prime is 285402457. The next prime is 285402493. The reversal of 285402480 is 84204582.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51414 + ... + 56693.

Almost surely, 2^285402480 is an apocalyptic number.

285402480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285402480 is an abundant number, since it is smaller than the sum of its proper divisors (679785744).

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

285402480 is a wasteful number, since it uses less digits than its factorization.

285402480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108134 (or 108128 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 285402480 is about 16893.8592393804. The cubic root of 285402480 is about 658.3940754009.

The spelling of 285402480 in words is "two hundred eighty-five million, four hundred two thousand, four hundred eighty".