428245390 has 16 divisors (see below), whose sum is σ = 771570432. Its totient is φ = 171136224.

The previous prime is 428245381. The next prime is 428245399. The reversal of 428245390 is 93542824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (428245381) and next prime (428245399).

It is a super-2 number, since 2×428245390² = 366788228112504200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428245399) 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, 8829 + ... + 30568.

It is an arithmetic number, because the mean of its divisors is an integer number (48223152).

Almost surely, 2^428245390 is an apocalyptic number.

428245390 is a deficient number, since it is larger than the sum of its proper divisors (343325042).

428245390 is a wasteful number, since it uses less digits than its factorization.

428245390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40491.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 428245390 is about 20694.0907024203. The cubic root of 428245390 is about 753.7562024449.

The spelling of 428245390 in words is "four hundred twenty-eight million, two hundred forty-five thousand, three hundred ninety".