396021528 has 384 divisors, whose sum is σ = 1418342400. Its totient is φ = 101606400.

The previous prime is 396021517. The next prime is 396021533. The reversal of 396021528 is 825120693.

396021528 is a `hidden beast` number, since 39 + 602 + 15 + 2 + 8 = 666.

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 = 396021492 and 396021501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5577733 + ... + 5577803.

It is an arithmetic number, because the mean of its divisors is an integer number (3693600).

Almost surely, 2^396021528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396021528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709171200).

396021528 is an abundant number, since it is smaller than the sum of its proper divisors (1022320872).

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

396021528 is a wasteful number, since it uses less digits than its factorization.

396021528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 396021528 is about 19900.2896461333. The cubic root of 396021528 is about 734.3553531319.

The spelling of 396021528 in words is "three hundred ninety-six million, twenty-one thousand, five hundred twenty-eight".