457285340 has 72 divisors (see below), whose sum is σ = 1027807872. Its totient is φ = 170714880.

The previous prime is 457285337. The next prime is 457285343. The reversal of 457285340 is 43582754.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (457285337) and next prime (457285343).

It is a junction number, because it is equal to n+sod(n) for n = 457285294 and 457285303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457285343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520982 + ... + 521858.

Almost surely, 2^457285340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 457285340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513903936).

457285340 is an abundant number, since it is smaller than the sum of its proper divisors (570522532).

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

457285340 is a wasteful number, since it uses less digits than its factorization.

457285340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 457285340 is about 21384.2311061212. The cubic root of 457285340 is about 770.4227397015.

The spelling of 457285340 in words is "four hundred fifty-seven million, two hundred eighty-five thousand, three hundred forty".