146623428 has 108 divisors (see below), whose sum is σ = 440457472. Its totient is φ = 40245120.

The previous prime is 146623381. The next prime is 146623429. The reversal of 146623428 is 824326641.

146623428 is a `hidden beast` number, since 1 + 4 + 6 + 623 + 4 + 28 = 666.

146623428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 146623392 and 146623401.

It is not an unprimeable number, because it can be changed into a prime (146623429) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1070176 + ... + 1070312.

Almost surely, 2^146623428 is an apocalyptic number.

146623428 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 146623428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220228736).

146623428 is an abundant number, since it is smaller than the sum of its proper divisors (293834044).

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

146623428 is a wasteful number, since it uses less digits than its factorization.

146623428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 180 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 146623428 is about 12108.8161271034. The cubic root of 146623428 is about 527.3121639044.

The spelling of 146623428 in words is "one hundred forty-six million, six hundred twenty-three thousand, four hundred twenty-eight".