428369980 has 24 divisors (see below), whose sum is σ = 912250080. Its totient is φ = 168934080.

The previous prime is 428369969. The next prime is 428369983. The reversal of 428369980 is 89963824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428369983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149415 + ... + 152254.

It is an arithmetic number, because the mean of its divisors is an integer number (38010420).

Almost surely, 2^428369980 is an apocalyptic number.

It is an amenable number.

428369980 is an abundant number, since it is smaller than the sum of its proper divisors (483880100).

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

428369980 is a wasteful number, since it uses less digits than its factorization.

428369980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301749 (or 301747 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 428369980 is about 20697.1007631504. The cubic root of 428369980 is about 753.8292924549.

The spelling of 428369980 in words is "four hundred twenty-eight million, three hundred sixty-nine thousand, nine hundred eighty".