140428398 has 64 divisors (see below), whose sum is σ = 326343168. Its totient is φ = 39813120.

The previous prime is 140428397. The next prime is 140428399. The reversal of 140428398 is 893824041.

140428398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140428397) and next prime (140428399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140428391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 288111 + ... + 288597.

It is an arithmetic number, because the mean of its divisors is an integer number (5099112).

Almost surely, 2^140428398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140428398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163171584).

140428398 is an abundant number, since it is smaller than the sum of its proper divisors (185914770).

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

140428398 is a wasteful number, since it uses less digits than its factorization.

140428398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 140428398 is about 11850.2488581464. The cubic root of 140428398 is about 519.7785028053.

The spelling of 140428398 in words is "one hundred forty million, four hundred twenty-eight thousand, three hundred ninety-eight".