428022090 has 64 divisors (see below), whose sum is σ = 1208545920. Its totient is φ = 107424000.

The previous prime is 428022061. The next prime is 428022109. The reversal of 428022090 is 90220824.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42036 + ... + 51215.

It is an arithmetic number, because the mean of its divisors is an integer number (18883530).

Almost surely, 2^428022090 is an apocalyptic number.

428022090 is an abundant number, since it is smaller than the sum of its proper divisors (780523830).

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

428022090 is a wasteful number, since it uses less digits than its factorization.

428022090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93284 (or 93278 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 428022090 is about 20688.6947389148. The cubic root of 428022090 is about 753.6251692981.

The spelling of 428022090 in words is "four hundred twenty-eight million, twenty-two thousand, ninety".