428177970 has 48 divisors (see below), whose sum is σ = 1214471232. Its totient is φ = 103800480.

The previous prime is 428177957. The next prime is 428177989. The reversal of 428177970 is 79771824.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215262 + ... + 217241.

It is an arithmetic number, because the mean of its divisors is an integer number (25301484).

Almost surely, 2^428177970 is an apocalyptic number.

428177970 is an abundant number, since it is smaller than the sum of its proper divisors (786293262).

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

428177970 is a wasteful number, since it uses less digits than its factorization.

428177970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432527 (or 432524 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 428177970 is about 20692.4616708598. The cubic root of 428177970 is about 753.7166449766.

The spelling of 428177970 in words is "four hundred twenty-eight million, one hundred seventy-seven thousand, nine hundred seventy".