153897408 has 140 divisors (see below), whose sum is σ = 521494512. Its totient is φ = 43960320.

The previous prime is 153897391. The next prime is 153897409. The reversal of 153897408 is 804798351.

153897408 is a `hidden beast` number, since 153 + 8 + 97 + 408 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153897409) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34168 + ... + 38408.

Almost surely, 2^153897408 is an apocalyptic number.

153897408 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 153897408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260747256).

153897408 is an abundant number, since it is smaller than the sum of its proper divisors (367597104).

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

153897408 is an equidigital number, since it uses as much as digits as its factorization.

153897408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272 (or 4253 counting only the distinct ones).

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

The square root of 153897408 is about 12405.5394078613. The cubic root of 153897408 is about 535.8917877633.

The spelling of 153897408 in words is "one hundred fifty-three million, eight hundred ninety-seven thousand, four hundred eight".