140526906 has 64 divisors (see below), whose sum is σ = 316431360. Its totient is φ = 41310720.

The previous prime is 140526901. The next prime is 140526923. The reversal of 140526906 is 609625041.

It is a super-2 number, since 2×140526906² = 39495622619865672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140526901) 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, 214876 + ... + 215528.

It is an arithmetic number, because the mean of its divisors is an integer number (4944240).

Almost surely, 2^140526906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140526906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158215680).

140526906 is an abundant number, since it is smaller than the sum of its proper divisors (175904454).

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

140526906 is a wasteful number, since it uses less digits than its factorization.

140526906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 140526906 is about 11854.4044979071. The cubic root of 140526906 is about 519.9000128267.

The spelling of 140526906 in words is "one hundred forty million, five hundred twenty-six thousand, nine hundred six".