144262840 has 32 divisors (see below), whose sum is σ = 335064960. Its totient is φ = 55843200.

The previous prime is 144262823. The next prime is 144262879. The reversal of 144262840 is 48262441.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56931 + ... + 59410.

It is an arithmetic number, because the mean of its divisors is an integer number (10470780).

Almost surely, 2^144262840 is an apocalyptic number.

144262840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144262840 is an abundant number, since it is smaller than the sum of its proper divisors (190802120).

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

144262840 is a wasteful number, since it uses less digits than its factorization.

144262840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116383 (or 116379 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 144262840 is about 12010.9466737639. The cubic root of 144262840 is about 524.4669904099.

The spelling of 144262840 in words is "one hundred forty-four million, two hundred sixty-two thousand, eight hundred forty".