140577780 has 96 divisors (see below), whose sum is σ = 451471104. Its totient is φ = 32016384.

The previous prime is 140577769. The next prime is 140577797. The reversal of 140577780 is 87775041.

It is a super-2 number, since 2×140577780² = 39524224459456800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181474 + ... + 182246.

It is an arithmetic number, because the mean of its divisors is an integer number (4702824).

Almost surely, 2^140577780 is an apocalyptic number.

140577780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140577780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225735552).

140577780 is an abundant number, since it is smaller than the sum of its proper divisors (310893324).

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

140577780 is a wasteful number, since it uses less digits than its factorization.

140577780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 140577780 is about 11856.5500884532. The cubic root of 140577780 is about 519.9627438791.

The spelling of 140577780 in words is "one hundred forty million, five hundred seventy-seven thousand, seven hundred eighty".