145371888 has 160 divisors (see below), whose sum is σ = 446400000. Its totient is φ = 45163008.

The previous prime is 145371881. The next prime is 145371931. The reversal of 145371888 is 888173541.

It is a happy number.

It is a super-2 number, since 2×145371888² = 42265971641369088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145371881) 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, 730413 + ... + 730611.

It is an arithmetic number, because the mean of its divisors is an integer number (2790000).

Almost surely, 2^145371888 is an apocalyptic number.

145371888 is a gapful number since it is divisible by the number (18) 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 145371888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223200000).

145371888 is an abundant number, since it is smaller than the sum of its proper divisors (301028112).

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

145371888 is a wasteful number, since it uses less digits than its factorization.

145371888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 312 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 145371888 is about 12057.0264991000. The cubic root of 145371888 is about 525.8075408989.

The spelling of 145371888 in words is "one hundred forty-five million, three hundred seventy-one thousand, eight hundred eighty-eight".