40297752 has 192 divisors, whose sum is σ = 130908960. Its totient is φ = 11059200.

The previous prime is 40297723. The next prime is 40297781. The reversal of 40297752 is 25779204.

It is an interprime number because it is at equal distance from previous prime (40297723) and next prime (40297781).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 551988 + ... + 552060.

Almost surely, 2^40297752 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 40297752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65454480).

40297752 is an abundant number, since it is smaller than the sum of its proper divisors (90611208).

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

40297752 is a wasteful number, since it uses less digits than its factorization.

40297752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 40297752 is about 6348.0510394924. The cubic root of 40297752 is about 342.8416737068.

It can be divided in two parts, 4029 and 7752, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 40297752 in words is "forty million, two hundred ninety-seven thousand, seven hundred fifty-two".