97451788 has 60 divisors (see below), whose sum is σ = 203128520. Its totient is φ = 40896576.

The previous prime is 97451773. The next prime is 97451797. The reversal of 97451788 is 88715479.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 701023 + ... + 701161.

Almost surely, 2^97451788 is an apocalyptic number.

97451788 is a gapful number since it is divisible by the number (98) 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 97451788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101564260).

97451788 is an abundant number, since it is smaller than the sum of its proper divisors (105676732).

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

97451788 is a wasteful number, since it uses less digits than its factorization.

97451788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 221 counting only the distinct ones).

The product of its digits is 564480, while the sum is 49.

The square root of 97451788 is about 9871.7672176769. The cubic root of 97451788 is about 460.1823284777.

The spelling of 97451788 in words is "ninety-seven million, four hundred fifty-one thousand, seven hundred eighty-eight".