428472240 has 80 divisors (see below), whose sum is σ = 1518021888. Its totient is φ = 97936128.

The previous prime is 428472227. The next prime is 428472241. The reversal of 428472240 is 42274824.

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

It is not an unprimeable number, because it can be changed into a prime (428472241) 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, 125842 + ... + 129201.

Almost surely, 2^428472240 is an apocalyptic number.

428472240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

428472240 is an abundant number, since it is smaller than the sum of its proper divisors (1089549648).

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

428472240 is a wasteful number, since it uses less digits than its factorization.

428472240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255066 (or 255060 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 33.

The square root of 428472240 is about 20699.5710100475. The cubic root of 428472240 is about 753.8892721095.

The spelling of 428472240 in words is "four hundred twenty-eight million, four hundred seventy-two thousand, two hundred forty".