140557464 has 64 divisors (see below), whose sum is σ = 391500000. Its totient is φ = 46725120.

The previous prime is 140557463. The next prime is 140557499. The reversal of 140557464 is 464755041.

140557464 is a `hidden beast` number, since 1 + 40 + 557 + 4 + 64 = 666.

It is a super-2 number, since 2×140557464² = 39512801372222592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140557463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111912 + ... + 113160.

Almost surely, 2^140557464 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 140557464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195750000).

140557464 is an abundant number, since it is smaller than the sum of its proper divisors (250942536).

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

140557464 is a wasteful number, since it uses less digits than its factorization.

140557464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 140557464 is about 11855.6933158715. The cubic root of 140557464 is about 519.9376947046.

The spelling of 140557464 in words is "one hundred forty million, five hundred fifty-seven thousand, four hundred sixty-four".