145878390 has 144 divisors (see below), whose sum is σ = 464695920. Its totient is φ = 31570560.

The previous prime is 145878361. The next prime is 145878407. The reversal of 145878390 is 93878541.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 82920 + ... + 84660.

It is an arithmetic number, because the mean of its divisors is an integer number (3227055).

Almost surely, 2^145878390 is an apocalyptic number.

145878390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145878390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232347960).

145878390 is an abundant number, since it is smaller than the sum of its proper divisors (318817530).

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

145878390 is a wasteful number, since it uses less digits than its factorization.

145878390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787 (or 1777 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 145878390 is about 12078.0126676536. The cubic root of 145878390 is about 526.4175026246.

The spelling of 145878390 in words is "one hundred forty-five million, eight hundred seventy-eight thousand, three hundred ninety".