9156420 has 216 divisors, whose sum is σ = 35171136. Its totient is φ = 1886976.

The previous prime is 9156403. The next prime is 9156437. The reversal of 9156420 is 246519.

9156420 is a `hidden beast` number, since 9 + 15 + 642 + 0 = 666.

9156420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9156403) and next prime (9156437).

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, 212919 + ... + 212961.

Almost surely, 2^9156420 is an apocalyptic number.

9156420 is a gapful number since it is divisible by the number (90) 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 9156420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17585568).

9156420 is an abundant number, since it is smaller than the sum of its proper divisors (26014716).

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

9156420 is a wasteful number, since it uses less digits than its factorization.

9156420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 9156420 is about 3025.9576996382. The cubic root of 9156420 is about 209.2065295121.

The spelling of 9156420 in words is "nine million, one hundred fifty-six thousand, four hundred twenty".