140428452 has 48 divisors (see below), whose sum is σ = 333143552. Its totient is φ = 46033920.

The previous prime is 140428451. The next prime is 140428459. The reversal of 140428452 is 254824041.

It is a super-2 number, since 2×140428452² = 39440300262232608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140428451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259302 + ... + 259842.

Almost surely, 2^140428452 is an apocalyptic number.

140428452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140428452 is an abundant number, since it is smaller than the sum of its proper divisors (192715100).

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

140428452 is a wasteful number, since it uses less digits than its factorization.

140428452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 140428452 is about 11850.2511365793. The cubic root of 140428452 is about 519.7785694301.

The spelling of 140428452 in words is "one hundred forty million, four hundred twenty-eight thousand, four hundred fifty-two".